xref: /freebsd/crypto/openssl/include/openssl/ssl.h (revision b077aed33b7b6aefca7b17ddb250cf521f938613)
1 /*
2  * WARNING: do not edit!
3  * Generated by Makefile from include/openssl/ssl.h.in
4  *
5  * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
6  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
7  * Copyright 2005 Nokia. All rights reserved.
8  *
9  * Licensed under the Apache License 2.0 (the "License").  You may not use
10  * this file except in compliance with the License.  You can obtain a copy
11  * in the file LICENSE in the source distribution or at
12  * https://www.openssl.org/source/license.html
13  */
14 
15 
16 
17 #ifndef OPENSSL_SSL_H
18 # define OPENSSL_SSL_H
19 # pragma once
20 
21 # include <openssl/macros.h>
22 # ifndef OPENSSL_NO_DEPRECATED_3_0
23 #  define HEADER_SSL_H
24 # endif
25 
26 # include <openssl/e_os2.h>
27 # include <openssl/opensslconf.h>
28 # include <openssl/comp.h>
29 # include <openssl/bio.h>
30 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
31 #  include <openssl/x509.h>
32 #  include <openssl/crypto.h>
33 #  include <openssl/buffer.h>
34 # endif
35 # include <openssl/lhash.h>
36 # include <openssl/pem.h>
37 # include <openssl/hmac.h>
38 # include <openssl/async.h>
39 
40 # include <openssl/safestack.h>
41 # include <openssl/symhacks.h>
42 # include <openssl/ct.h>
43 # include <openssl/sslerr.h>
44 # include <openssl/prov_ssl.h>
45 
46 #ifdef  __cplusplus
47 extern "C" {
48 #endif
49 
50 /* OpenSSL version number for ASN.1 encoding of the session information */
51 /*-
52  * Version 0 - initial version
53  * Version 1 - added the optional peer certificate
54  */
55 # define SSL_SESSION_ASN1_VERSION 0x0001
56 
57 # define SSL_MAX_SSL_SESSION_ID_LENGTH           32
58 # define SSL_MAX_SID_CTX_LENGTH                  32
59 
60 # define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES     (512/8)
61 # define SSL_MAX_KEY_ARG_LENGTH                  8
62 /* SSL_MAX_MASTER_KEY_LENGTH is defined in prov_ssl.h */
63 
64 /* The maximum number of encrypt/decrypt pipelines we can support */
65 # define SSL_MAX_PIPELINES  32
66 
67 /* text strings for the ciphers */
68 
69 /* These are used to specify which ciphers to use and not to use */
70 
71 # define SSL_TXT_LOW             "LOW"
72 # define SSL_TXT_MEDIUM          "MEDIUM"
73 # define SSL_TXT_HIGH            "HIGH"
74 # define SSL_TXT_FIPS            "FIPS"
75 
76 # define SSL_TXT_aNULL           "aNULL"
77 # define SSL_TXT_eNULL           "eNULL"
78 # define SSL_TXT_NULL            "NULL"
79 
80 # define SSL_TXT_kRSA            "kRSA"
81 # define SSL_TXT_kDHr            "kDHr"/* this cipher class has been removed */
82 # define SSL_TXT_kDHd            "kDHd"/* this cipher class has been removed */
83 # define SSL_TXT_kDH             "kDH"/* this cipher class has been removed */
84 # define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
85 # define SSL_TXT_kDHE            "kDHE"
86 # define SSL_TXT_kECDHr          "kECDHr"/* this cipher class has been removed */
87 # define SSL_TXT_kECDHe          "kECDHe"/* this cipher class has been removed */
88 # define SSL_TXT_kECDH           "kECDH"/* this cipher class has been removed */
89 # define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
90 # define SSL_TXT_kECDHE          "kECDHE"
91 # define SSL_TXT_kPSK            "kPSK"
92 # define SSL_TXT_kRSAPSK         "kRSAPSK"
93 # define SSL_TXT_kECDHEPSK       "kECDHEPSK"
94 # define SSL_TXT_kDHEPSK         "kDHEPSK"
95 # define SSL_TXT_kGOST           "kGOST"
96 # define SSL_TXT_kGOST18         "kGOST18"
97 # define SSL_TXT_kSRP            "kSRP"
98 
99 # define SSL_TXT_aRSA            "aRSA"
100 # define SSL_TXT_aDSS            "aDSS"
101 # define SSL_TXT_aDH             "aDH"/* this cipher class has been removed */
102 # define SSL_TXT_aECDH           "aECDH"/* this cipher class has been removed */
103 # define SSL_TXT_aECDSA          "aECDSA"
104 # define SSL_TXT_aPSK            "aPSK"
105 # define SSL_TXT_aGOST94         "aGOST94"
106 # define SSL_TXT_aGOST01         "aGOST01"
107 # define SSL_TXT_aGOST12         "aGOST12"
108 # define SSL_TXT_aGOST           "aGOST"
109 # define SSL_TXT_aSRP            "aSRP"
110 
111 # define SSL_TXT_DSS             "DSS"
112 # define SSL_TXT_DH              "DH"
113 # define SSL_TXT_DHE             "DHE"/* same as "kDHE:-ADH" */
114 # define SSL_TXT_EDH             "EDH"/* alias for DHE */
115 # define SSL_TXT_ADH             "ADH"
116 # define SSL_TXT_RSA             "RSA"
117 # define SSL_TXT_ECDH            "ECDH"
118 # define SSL_TXT_EECDH           "EECDH"/* alias for ECDHE" */
119 # define SSL_TXT_ECDHE           "ECDHE"/* same as "kECDHE:-AECDH" */
120 # define SSL_TXT_AECDH           "AECDH"
121 # define SSL_TXT_ECDSA           "ECDSA"
122 # define SSL_TXT_PSK             "PSK"
123 # define SSL_TXT_SRP             "SRP"
124 
125 # define SSL_TXT_DES             "DES"
126 # define SSL_TXT_3DES            "3DES"
127 # define SSL_TXT_RC4             "RC4"
128 # define SSL_TXT_RC2             "RC2"
129 # define SSL_TXT_IDEA            "IDEA"
130 # define SSL_TXT_SEED            "SEED"
131 # define SSL_TXT_AES128          "AES128"
132 # define SSL_TXT_AES256          "AES256"
133 # define SSL_TXT_AES             "AES"
134 # define SSL_TXT_AES_GCM         "AESGCM"
135 # define SSL_TXT_AES_CCM         "AESCCM"
136 # define SSL_TXT_AES_CCM_8       "AESCCM8"
137 # define SSL_TXT_CAMELLIA128     "CAMELLIA128"
138 # define SSL_TXT_CAMELLIA256     "CAMELLIA256"
139 # define SSL_TXT_CAMELLIA        "CAMELLIA"
140 # define SSL_TXT_CHACHA20        "CHACHA20"
141 # define SSL_TXT_GOST            "GOST89"
142 # define SSL_TXT_ARIA            "ARIA"
143 # define SSL_TXT_ARIA_GCM        "ARIAGCM"
144 # define SSL_TXT_ARIA128         "ARIA128"
145 # define SSL_TXT_ARIA256         "ARIA256"
146 # define SSL_TXT_GOST2012_GOST8912_GOST8912 "GOST2012-GOST8912-GOST8912"
147 # define SSL_TXT_CBC             "CBC"
148 
149 # define SSL_TXT_MD5             "MD5"
150 # define SSL_TXT_SHA1            "SHA1"
151 # define SSL_TXT_SHA             "SHA"/* same as "SHA1" */
152 # define SSL_TXT_GOST94          "GOST94"
153 # define SSL_TXT_GOST89MAC       "GOST89MAC"
154 # define SSL_TXT_GOST12          "GOST12"
155 # define SSL_TXT_GOST89MAC12     "GOST89MAC12"
156 # define SSL_TXT_SHA256          "SHA256"
157 # define SSL_TXT_SHA384          "SHA384"
158 
159 # define SSL_TXT_SSLV3           "SSLv3"
160 # define SSL_TXT_TLSV1           "TLSv1"
161 # define SSL_TXT_TLSV1_1         "TLSv1.1"
162 # define SSL_TXT_TLSV1_2         "TLSv1.2"
163 
164 # define SSL_TXT_ALL             "ALL"
165 
166 /*-
167  * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
168  * ciphers normally not being used.
169  * Example: "RC4" will activate all ciphers using RC4 including ciphers
170  * without authentication, which would normally disabled by DEFAULT (due
171  * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
172  * will make sure that it is also disabled in the specific selection.
173  * COMPLEMENTOF* identifiers are portable between version, as adjustments
174  * to the default cipher setup will also be included here.
175  *
176  * COMPLEMENTOFDEFAULT does not experience the same special treatment that
177  * DEFAULT gets, as only selection is being done and no sorting as needed
178  * for DEFAULT.
179  */
180 # define SSL_TXT_CMPALL          "COMPLEMENTOFALL"
181 # define SSL_TXT_CMPDEF          "COMPLEMENTOFDEFAULT"
182 
183 /*
184  * The following cipher list is used by default. It also is substituted when
185  * an application-defined cipher list string starts with 'DEFAULT'.
186  * This applies to ciphersuites for TLSv1.2 and below.
187  * DEPRECATED IN 3.0.0, in favor of OSSL_default_cipher_list()
188  * Update both macro and function simultaneously
189  */
190 # ifndef OPENSSL_NO_DEPRECATED_3_0
191 #  define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
192 /*
193  * This is the default set of TLSv1.3 ciphersuites
194  * DEPRECATED IN 3.0.0, in favor of OSSL_default_ciphersuites()
195  * Update both macro and function simultaneously
196  */
197 #  define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
198                                    "TLS_CHACHA20_POLY1305_SHA256:" \
199                                    "TLS_AES_128_GCM_SHA256"
200 # endif
201 /*
202  * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
203  * starts with a reasonable order, and all we have to do for DEFAULT is
204  * throwing out anonymous and unencrypted ciphersuites! (The latter are not
205  * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
206  */
207 
208 /* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
209 # define SSL_SENT_SHUTDOWN       1
210 # define SSL_RECEIVED_SHUTDOWN   2
211 
212 #ifdef __cplusplus
213 }
214 #endif
215 
216 #ifdef  __cplusplus
217 extern "C" {
218 #endif
219 
220 # define SSL_FILETYPE_ASN1       X509_FILETYPE_ASN1
221 # define SSL_FILETYPE_PEM        X509_FILETYPE_PEM
222 
223 /*
224  * This is needed to stop compilers complaining about the 'struct ssl_st *'
225  * function parameters used to prototype callbacks in SSL_CTX.
226  */
227 typedef struct ssl_st *ssl_crock_st;
228 typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
229 typedef struct ssl_method_st SSL_METHOD;
230 typedef struct ssl_cipher_st SSL_CIPHER;
231 typedef struct ssl_session_st SSL_SESSION;
232 typedef struct tls_sigalgs_st TLS_SIGALGS;
233 typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
234 typedef struct ssl_comp_st SSL_COMP;
235 
236 STACK_OF(SSL_CIPHER);
237 STACK_OF(SSL_COMP);
238 
239 /* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
240 typedef struct srtp_protection_profile_st {
241     const char *name;
242     unsigned long id;
243 } SRTP_PROTECTION_PROFILE;
244 SKM_DEFINE_STACK_OF_INTERNAL(SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE)
245 #define sk_SRTP_PROTECTION_PROFILE_num(sk) OPENSSL_sk_num(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
246 #define sk_SRTP_PROTECTION_PROFILE_value(sk, idx) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_value(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx)))
247 #define sk_SRTP_PROTECTION_PROFILE_new(cmp) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
248 #define sk_SRTP_PROTECTION_PROFILE_new_null() ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_null())
249 #define sk_SRTP_PROTECTION_PROFILE_new_reserve(cmp, n) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_reserve(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp), (n)))
250 #define sk_SRTP_PROTECTION_PROFILE_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (n))
251 #define sk_SRTP_PROTECTION_PROFILE_free(sk) OPENSSL_sk_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
252 #define sk_SRTP_PROTECTION_PROFILE_zero(sk) OPENSSL_sk_zero(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
253 #define sk_SRTP_PROTECTION_PROFILE_delete(sk, i) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (i)))
254 #define sk_SRTP_PROTECTION_PROFILE_delete_ptr(sk, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete_ptr(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
255 #define sk_SRTP_PROTECTION_PROFILE_push(sk, ptr) OPENSSL_sk_push(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
256 #define sk_SRTP_PROTECTION_PROFILE_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
257 #define sk_SRTP_PROTECTION_PROFILE_pop(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_pop(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
258 #define sk_SRTP_PROTECTION_PROFILE_shift(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_shift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
259 #define sk_SRTP_PROTECTION_PROFILE_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk),ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc))
260 #define sk_SRTP_PROTECTION_PROFILE_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), (idx))
261 #define sk_SRTP_PROTECTION_PROFILE_set(sk, idx, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_set(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
262 #define sk_SRTP_PROTECTION_PROFILE_find(sk, ptr) OPENSSL_sk_find(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
263 #define sk_SRTP_PROTECTION_PROFILE_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
264 #define sk_SRTP_PROTECTION_PROFILE_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), pnum)
265 #define sk_SRTP_PROTECTION_PROFILE_sort(sk) OPENSSL_sk_sort(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
266 #define sk_SRTP_PROTECTION_PROFILE_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
267 #define sk_SRTP_PROTECTION_PROFILE_dup(sk) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_dup(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk)))
268 #define sk_SRTP_PROTECTION_PROFILE_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_deep_copy(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_copyfunc_type(copyfunc), ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc)))
269 #define sk_SRTP_PROTECTION_PROFILE_set_cmp_func(sk, cmp) ((sk_SRTP_PROTECTION_PROFILE_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
270 
271 
272 
273 typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data,
274                                             int len, void *arg);
275 typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len,
276                                         STACK_OF(SSL_CIPHER) *peer_ciphers,
277                                         const SSL_CIPHER **cipher, void *arg);
278 
279 /* Extension context codes */
280 /* This extension is only allowed in TLS */
281 #define SSL_EXT_TLS_ONLY                        0x0001
282 /* This extension is only allowed in DTLS */
283 #define SSL_EXT_DTLS_ONLY                       0x0002
284 /* Some extensions may be allowed in DTLS but we don't implement them for it */
285 #define SSL_EXT_TLS_IMPLEMENTATION_ONLY         0x0004
286 /* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
287 #define SSL_EXT_SSL3_ALLOWED                    0x0008
288 /* Extension is only defined for TLS1.2 and below */
289 #define SSL_EXT_TLS1_2_AND_BELOW_ONLY           0x0010
290 /* Extension is only defined for TLS1.3 and above */
291 #define SSL_EXT_TLS1_3_ONLY                     0x0020
292 /* Ignore this extension during parsing if we are resuming */
293 #define SSL_EXT_IGNORE_ON_RESUMPTION            0x0040
294 #define SSL_EXT_CLIENT_HELLO                    0x0080
295 /* Really means TLS1.2 or below */
296 #define SSL_EXT_TLS1_2_SERVER_HELLO             0x0100
297 #define SSL_EXT_TLS1_3_SERVER_HELLO             0x0200
298 #define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS     0x0400
299 #define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST      0x0800
300 #define SSL_EXT_TLS1_3_CERTIFICATE              0x1000
301 #define SSL_EXT_TLS1_3_NEW_SESSION_TICKET       0x2000
302 #define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST      0x4000
303 
304 /* Typedefs for handling custom extensions */
305 
306 typedef int (*custom_ext_add_cb)(SSL *s, unsigned int ext_type,
307                                  const unsigned char **out, size_t *outlen,
308                                  int *al, void *add_arg);
309 
310 typedef void (*custom_ext_free_cb)(SSL *s, unsigned int ext_type,
311                                    const unsigned char *out, void *add_arg);
312 
313 typedef int (*custom_ext_parse_cb)(SSL *s, unsigned int ext_type,
314                                    const unsigned char *in, size_t inlen,
315                                    int *al, void *parse_arg);
316 
317 
318 typedef int (*SSL_custom_ext_add_cb_ex)(SSL *s, unsigned int ext_type,
319                                         unsigned int context,
320                                         const unsigned char **out,
321                                         size_t *outlen, X509 *x,
322                                         size_t chainidx,
323                                         int *al, void *add_arg);
324 
325 typedef void (*SSL_custom_ext_free_cb_ex)(SSL *s, unsigned int ext_type,
326                                           unsigned int context,
327                                           const unsigned char *out,
328                                           void *add_arg);
329 
330 typedef int (*SSL_custom_ext_parse_cb_ex)(SSL *s, unsigned int ext_type,
331                                           unsigned int context,
332                                           const unsigned char *in,
333                                           size_t inlen, X509 *x,
334                                           size_t chainidx,
335                                           int *al, void *parse_arg);
336 
337 /* Typedef for verification callback */
338 typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
339 
340 /* Typedef for SSL async callback */
341 typedef int (*SSL_async_callback_fn)(SSL *s, void *arg);
342 
343 #define SSL_OP_BIT(n)  ((uint64_t)1 << (uint64_t)n)
344 
345 /*
346  * SSL/TLS connection options.
347  */
348     /* Disable Extended master secret */
349 # define SSL_OP_NO_EXTENDED_MASTER_SECRET                SSL_OP_BIT(0)
350     /* Cleanse plaintext copies of data delivered to the application */
351 # define SSL_OP_CLEANSE_PLAINTEXT                        SSL_OP_BIT(1)
352     /* Allow initial connection to servers that don't support RI */
353 # define SSL_OP_LEGACY_SERVER_CONNECT                    SSL_OP_BIT(2)
354     /* Enable support for Kernel TLS */
355 # define SSL_OP_ENABLE_KTLS                              SSL_OP_BIT(3)
356 # define SSL_OP_TLSEXT_PADDING                           SSL_OP_BIT(4)
357 # define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   SSL_OP_BIT(6)
358 # define SSL_OP_IGNORE_UNEXPECTED_EOF                    SSL_OP_BIT(7)
359 # define SSL_OP_ALLOW_CLIENT_RENEGOTIATION               SSL_OP_BIT(8)
360 # define SSL_OP_DISABLE_TLSEXT_CA_NAMES                  SSL_OP_BIT(9)
361     /* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
362 # define SSL_OP_ALLOW_NO_DHE_KEX                         SSL_OP_BIT(10)
363     /*
364      * Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
365      * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)
366      * the workaround is not needed.  Unfortunately some broken SSL/TLS
367      * implementations cannot handle it at all, which is why we include it
368      * in SSL_OP_ALL. Added in 0.9.6e
369      */
370 # define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              SSL_OP_BIT(11)
371     /* DTLS options */
372 # define SSL_OP_NO_QUERY_MTU                             SSL_OP_BIT(12)
373     /* Turn on Cookie Exchange (on relevant for servers) */
374 # define SSL_OP_COOKIE_EXCHANGE                          SSL_OP_BIT(13)
375     /* Don't use RFC4507 ticket extension */
376 # define SSL_OP_NO_TICKET                                SSL_OP_BIT(14)
377 # ifndef OPENSSL_NO_DTLS1_METHOD
378     /*
379      * Use Cisco's version identifier of DTLS_BAD_VER
380      * (only with deprecated DTLSv1_client_method())
381      */
382 #  define SSL_OP_CISCO_ANYCONNECT                        SSL_OP_BIT(15)
383 # endif
384     /* As server, disallow session resumption on renegotiation */
385 # define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   SSL_OP_BIT(16)
386     /* Don't use compression even if supported */
387 # define SSL_OP_NO_COMPRESSION                           SSL_OP_BIT(17)
388     /* Permit unsafe legacy renegotiation */
389 # define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        SSL_OP_BIT(18)
390     /* Disable encrypt-then-mac */
391 # define SSL_OP_NO_ENCRYPT_THEN_MAC                      SSL_OP_BIT(19)
392     /*
393      * Enable TLSv1.3 Compatibility mode. This is on by default. A future
394      * version of OpenSSL may have this disabled by default.
395      */
396 # define SSL_OP_ENABLE_MIDDLEBOX_COMPAT                  SSL_OP_BIT(20)
397     /*
398      * Prioritize Chacha20Poly1305 when client does.
399      * Modifies SSL_OP_CIPHER_SERVER_PREFERENCE
400      */
401 # define SSL_OP_PRIORITIZE_CHACHA                        SSL_OP_BIT(21)
402     /*
403      * Set on servers to choose the cipher according to server's preferences.
404      */
405 # define SSL_OP_CIPHER_SERVER_PREFERENCE                 SSL_OP_BIT(22)
406     /*
407      * If set, a server will allow a client to issue a SSLv3.0 version
408      * number as latest version supported in the premaster secret, even when
409      * TLSv1.0 (version 3.1) was announced in the client hello. Normally
410      * this is forbidden to prevent version rollback attacks.
411      */
412 # define SSL_OP_TLS_ROLLBACK_BUG                         SSL_OP_BIT(23)
413     /*
414      * Switches off automatic TLSv1.3 anti-replay protection for early data.
415      * This is a server-side option only (no effect on the client).
416      */
417 # define SSL_OP_NO_ANTI_REPLAY                           SSL_OP_BIT(24)
418 # define SSL_OP_NO_SSLv3                                 SSL_OP_BIT(25)
419 # define SSL_OP_NO_TLSv1                                 SSL_OP_BIT(26)
420 # define SSL_OP_NO_TLSv1_2                               SSL_OP_BIT(27)
421 # define SSL_OP_NO_TLSv1_1                               SSL_OP_BIT(28)
422 # define SSL_OP_NO_TLSv1_3                               SSL_OP_BIT(29)
423 # define SSL_OP_NO_DTLSv1                                SSL_OP_BIT(26)
424 # define SSL_OP_NO_DTLSv1_2                              SSL_OP_BIT(27)
425     /* Disallow all renegotiation */
426 # define SSL_OP_NO_RENEGOTIATION                         SSL_OP_BIT(30)
427     /*
428      * Make server add server-hello extension from early version of
429      * cryptopro draft, when GOST ciphersuite is negotiated. Required for
430      * interoperability with CryptoPro CSP 3.x
431      */
432 # define SSL_OP_CRYPTOPRO_TLSEXT_BUG                     SSL_OP_BIT(31)
433 
434 /*
435  * Option "collections."
436  */
437 # define SSL_OP_NO_SSL_MASK \
438         ( SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1 \
439           | SSL_OP_NO_TLSv1_2 | SSL_OP_NO_TLSv1_3 )
440 # define SSL_OP_NO_DTLS_MASK \
441         ( SSL_OP_NO_DTLSv1 | SSL_OP_NO_DTLSv1_2 )
442 
443 /* Various bug workarounds that should be rather harmless. */
444 # define SSL_OP_ALL \
445         ( SSL_OP_CRYPTOPRO_TLSEXT_BUG | SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS \
446           | SSL_OP_TLSEXT_PADDING | SSL_OP_SAFARI_ECDHE_ECDSA_BUG )
447 
448 /*
449  * OBSOLETE OPTIONS retained for compatibility
450  */
451 
452 # define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x0
453 # define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x0
454 # define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x0
455 # define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG              0x0
456 # define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x0
457 # define SSL_OP_MSIE_SSLV2_RSA_PADDING                   0x0
458 # define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x0
459 # define SSL_OP_TLS_D5_BUG                               0x0
460 # define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x0
461 # define SSL_OP_SINGLE_ECDH_USE                          0x0
462 # define SSL_OP_SINGLE_DH_USE                            0x0
463 # define SSL_OP_EPHEMERAL_RSA                            0x0
464 # define SSL_OP_NO_SSLv2                                 0x0
465 # define SSL_OP_PKCS1_CHECK_1                            0x0
466 # define SSL_OP_PKCS1_CHECK_2                            0x0
467 # define SSL_OP_NETSCAPE_CA_DN_BUG                       0x0
468 # define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x0
469 
470 /*
471  * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
472  * when just a single record has been written):
473  */
474 # define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001U
475 /*
476  * Make it possible to retry SSL_write() with changed buffer location (buffer
477  * contents must stay the same!); this is not the default to avoid the
478  * misconception that non-blocking SSL_write() behaves like non-blocking
479  * write():
480  */
481 # define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
482 /*
483  * Never bother the application with retries if the transport is blocking:
484  */
485 # define SSL_MODE_AUTO_RETRY 0x00000004U
486 /* Don't attempt to automatically build certificate chain */
487 # define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
488 /*
489  * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
490  * TLS only.) Released buffers are freed.
491  */
492 # define SSL_MODE_RELEASE_BUFFERS 0x00000010U
493 /*
494  * Send the current time in the Random fields of the ClientHello and
495  * ServerHello records for compatibility with hypothetical implementations
496  * that require it.
497  */
498 # define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
499 # define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
500 /*
501  * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
502  * that reconnect with a downgraded protocol version; see
503  * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
504  * application attempts a normal handshake. Only use this in explicit
505  * fallback retries, following the guidance in
506  * draft-ietf-tls-downgrade-scsv-00.
507  */
508 # define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
509 /*
510  * Support Asynchronous operation
511  */
512 # define SSL_MODE_ASYNC 0x00000100U
513 
514 /*
515  * When using DTLS/SCTP, include the terminating zero in the label
516  * used for computing the endpoint-pair shared secret. Required for
517  * interoperability with implementations having this bug like these
518  * older version of OpenSSL:
519  * - OpenSSL 1.0.0 series
520  * - OpenSSL 1.0.1 series
521  * - OpenSSL 1.0.2 series
522  * - OpenSSL 1.1.0 series
523  * - OpenSSL 1.1.1 and 1.1.1a
524  */
525 # define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
526 
527 /* Cert related flags */
528 /*
529  * Many implementations ignore some aspects of the TLS standards such as
530  * enforcing certificate chain algorithms. When this is set we enforce them.
531  */
532 # define SSL_CERT_FLAG_TLS_STRICT                0x00000001U
533 
534 /* Suite B modes, takes same values as certificate verify flags */
535 # define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY       0x10000
536 /* Suite B 192 bit only mode */
537 # define SSL_CERT_FLAG_SUITEB_192_LOS            0x20000
538 /* Suite B 128 bit mode allowing 192 bit algorithms */
539 # define SSL_CERT_FLAG_SUITEB_128_LOS            0x30000
540 
541 /* Perform all sorts of protocol violations for testing purposes */
542 # define SSL_CERT_FLAG_BROKEN_PROTOCOL           0x10000000
543 
544 /* Flags for building certificate chains */
545 /* Treat any existing certificates as untrusted CAs */
546 # define SSL_BUILD_CHAIN_FLAG_UNTRUSTED          0x1
547 /* Don't include root CA in chain */
548 # define SSL_BUILD_CHAIN_FLAG_NO_ROOT            0x2
549 /* Just check certificates already there */
550 # define SSL_BUILD_CHAIN_FLAG_CHECK              0x4
551 /* Ignore verification errors */
552 # define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR       0x8
553 /* Clear verification errors from queue */
554 # define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR        0x10
555 
556 /* Flags returned by SSL_check_chain */
557 /* Certificate can be used with this session */
558 # define CERT_PKEY_VALID         0x1
559 /* Certificate can also be used for signing */
560 # define CERT_PKEY_SIGN          0x2
561 /* EE certificate signing algorithm OK */
562 # define CERT_PKEY_EE_SIGNATURE  0x10
563 /* CA signature algorithms OK */
564 # define CERT_PKEY_CA_SIGNATURE  0x20
565 /* EE certificate parameters OK */
566 # define CERT_PKEY_EE_PARAM      0x40
567 /* CA certificate parameters OK */
568 # define CERT_PKEY_CA_PARAM      0x80
569 /* Signing explicitly allowed as opposed to SHA1 fallback */
570 # define CERT_PKEY_EXPLICIT_SIGN 0x100
571 /* Client CA issuer names match (always set for server cert) */
572 # define CERT_PKEY_ISSUER_NAME   0x200
573 /* Cert type matches client types (always set for server cert) */
574 # define CERT_PKEY_CERT_TYPE     0x400
575 /* Cert chain suitable to Suite B */
576 # define CERT_PKEY_SUITEB        0x800
577 
578 # define SSL_CONF_FLAG_CMDLINE           0x1
579 # define SSL_CONF_FLAG_FILE              0x2
580 # define SSL_CONF_FLAG_CLIENT            0x4
581 # define SSL_CONF_FLAG_SERVER            0x8
582 # define SSL_CONF_FLAG_SHOW_ERRORS       0x10
583 # define SSL_CONF_FLAG_CERTIFICATE       0x20
584 # define SSL_CONF_FLAG_REQUIRE_PRIVATE   0x40
585 /* Configuration value types */
586 # define SSL_CONF_TYPE_UNKNOWN           0x0
587 # define SSL_CONF_TYPE_STRING            0x1
588 # define SSL_CONF_TYPE_FILE              0x2
589 # define SSL_CONF_TYPE_DIR               0x3
590 # define SSL_CONF_TYPE_NONE              0x4
591 # define SSL_CONF_TYPE_STORE             0x5
592 
593 /* Maximum length of the application-controlled segment of a a TLSv1.3 cookie */
594 # define SSL_COOKIE_LENGTH                       4096
595 
596 /*
597  * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
598  * cannot be used to clear bits.
599  */
600 
601 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx);
602 uint64_t SSL_get_options(const SSL *s);
603 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op);
604 uint64_t SSL_clear_options(SSL *s, uint64_t op);
605 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op);
606 uint64_t SSL_set_options(SSL *s, uint64_t op);
607 
608 # define SSL_CTX_set_mode(ctx,op) \
609         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
610 # define SSL_CTX_clear_mode(ctx,op) \
611         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
612 # define SSL_CTX_get_mode(ctx) \
613         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
614 # define SSL_clear_mode(ssl,op) \
615         SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
616 # define SSL_set_mode(ssl,op) \
617         SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
618 # define SSL_get_mode(ssl) \
619         SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
620 # define SSL_set_mtu(ssl, mtu) \
621         SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
622 # define DTLS_set_link_mtu(ssl, mtu) \
623         SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
624 # define DTLS_get_link_min_mtu(ssl) \
625         SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
626 
627 # define SSL_get_secure_renegotiation_support(ssl) \
628         SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
629 
630 # define SSL_CTX_set_cert_flags(ctx,op) \
631         SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
632 # define SSL_set_cert_flags(s,op) \
633         SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
634 # define SSL_CTX_clear_cert_flags(ctx,op) \
635         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
636 # define SSL_clear_cert_flags(s,op) \
637         SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
638 
639 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
640                               void (*cb) (int write_p, int version,
641                                           int content_type, const void *buf,
642                                           size_t len, SSL *ssl, void *arg));
643 void SSL_set_msg_callback(SSL *ssl,
644                           void (*cb) (int write_p, int version,
645                                       int content_type, const void *buf,
646                                       size_t len, SSL *ssl, void *arg));
647 # define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
648 # define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
649 
650 # define SSL_get_extms_support(s) \
651         SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
652 
653 # ifndef OPENSSL_NO_SRP
654 /* see tls_srp.c */
655 #  ifndef OPENSSL_NO_DEPRECATED_3_0
656 OSSL_DEPRECATEDIN_3_0 __owur int SSL_SRP_CTX_init(SSL *s);
657 OSSL_DEPRECATEDIN_3_0 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
658 OSSL_DEPRECATEDIN_3_0 int SSL_SRP_CTX_free(SSL *ctx);
659 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
660 OSSL_DEPRECATEDIN_3_0 __owur int SSL_srp_server_param_with_username(SSL *s,
661                                                                     int *ad);
662 OSSL_DEPRECATEDIN_3_0 __owur int SRP_Calc_A_param(SSL *s);
663 #  endif
664 # endif
665 
666 /* 100k max cert list */
667 # define SSL_MAX_CERT_LIST_DEFAULT (1024*100)
668 
669 # define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT      (1024*20)
670 
671 /*
672  * This callback type is used inside SSL_CTX, SSL, and in the functions that
673  * set them. It is used to override the generation of SSL/TLS session IDs in
674  * a server. Return value should be zero on an error, non-zero to proceed.
675  * Also, callbacks should themselves check if the id they generate is unique
676  * otherwise the SSL handshake will fail with an error - callbacks can do
677  * this using the 'ssl' value they're passed by;
678  * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
679  * is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
680  * bytes. The callback can alter this length to be less if desired. It is
681  * also an error for the callback to set the size to zero.
682  */
683 typedef int (*GEN_SESSION_CB) (SSL *ssl, unsigned char *id,
684                                unsigned int *id_len);
685 
686 # define SSL_SESS_CACHE_OFF                      0x0000
687 # define SSL_SESS_CACHE_CLIENT                   0x0001
688 # define SSL_SESS_CACHE_SERVER                   0x0002
689 # define SSL_SESS_CACHE_BOTH     (SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
690 # define SSL_SESS_CACHE_NO_AUTO_CLEAR            0x0080
691 /* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
692 # define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP       0x0100
693 # define SSL_SESS_CACHE_NO_INTERNAL_STORE        0x0200
694 # define SSL_SESS_CACHE_NO_INTERNAL \
695         (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)
696 # define SSL_SESS_CACHE_UPDATE_TIME              0x0400
697 
698 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
699 # define SSL_CTX_sess_number(ctx) \
700         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
701 # define SSL_CTX_sess_connect(ctx) \
702         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
703 # define SSL_CTX_sess_connect_good(ctx) \
704         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
705 # define SSL_CTX_sess_connect_renegotiate(ctx) \
706         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
707 # define SSL_CTX_sess_accept(ctx) \
708         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
709 # define SSL_CTX_sess_accept_renegotiate(ctx) \
710         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
711 # define SSL_CTX_sess_accept_good(ctx) \
712         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
713 # define SSL_CTX_sess_hits(ctx) \
714         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
715 # define SSL_CTX_sess_cb_hits(ctx) \
716         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
717 # define SSL_CTX_sess_misses(ctx) \
718         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
719 # define SSL_CTX_sess_timeouts(ctx) \
720         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
721 # define SSL_CTX_sess_cache_full(ctx) \
722         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
723 
724 void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
725                              int (*new_session_cb) (struct ssl_st *ssl,
726                                                     SSL_SESSION *sess));
727 int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
728                                               SSL_SESSION *sess);
729 void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
730                                 void (*remove_session_cb) (struct ssl_ctx_st
731                                                            *ctx,
732                                                            SSL_SESSION *sess));
733 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (struct ssl_ctx_st *ctx,
734                                                   SSL_SESSION *sess);
735 void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
736                              SSL_SESSION *(*get_session_cb) (struct ssl_st
737                                                              *ssl,
738                                                              const unsigned char
739                                                              *data, int len,
740                                                              int *copy));
741 SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
742                                                        const unsigned char *data,
743                                                        int len, int *copy);
744 void SSL_CTX_set_info_callback(SSL_CTX *ctx,
745                                void (*cb) (const SSL *ssl, int type, int val));
746 void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
747                                                  int val);
748 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
749                                 int (*client_cert_cb) (SSL *ssl, X509 **x509,
750                                                        EVP_PKEY **pkey));
751 int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
752                                                  EVP_PKEY **pkey);
753 # ifndef OPENSSL_NO_ENGINE
754 __owur int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
755 # endif
756 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
757                                     int (*app_gen_cookie_cb) (SSL *ssl,
758                                                               unsigned char
759                                                               *cookie,
760                                                               unsigned int
761                                                               *cookie_len));
762 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
763                                   int (*app_verify_cookie_cb) (SSL *ssl,
764                                                                const unsigned
765                                                                char *cookie,
766                                                                unsigned int
767                                                                cookie_len));
768 
769 void SSL_CTX_set_stateless_cookie_generate_cb(
770     SSL_CTX *ctx,
771     int (*gen_stateless_cookie_cb) (SSL *ssl,
772                                     unsigned char *cookie,
773                                     size_t *cookie_len));
774 void SSL_CTX_set_stateless_cookie_verify_cb(
775     SSL_CTX *ctx,
776     int (*verify_stateless_cookie_cb) (SSL *ssl,
777                                        const unsigned char *cookie,
778                                        size_t cookie_len));
779 # ifndef OPENSSL_NO_NEXTPROTONEG
780 
781 typedef int (*SSL_CTX_npn_advertised_cb_func)(SSL *ssl,
782                                               const unsigned char **out,
783                                               unsigned int *outlen,
784                                               void *arg);
785 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
786                                            SSL_CTX_npn_advertised_cb_func cb,
787                                            void *arg);
788 #  define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
789 
790 typedef int (*SSL_CTX_npn_select_cb_func)(SSL *s,
791                                           unsigned char **out,
792                                           unsigned char *outlen,
793                                           const unsigned char *in,
794                                           unsigned int inlen,
795                                           void *arg);
796 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
797                                       SSL_CTX_npn_select_cb_func cb,
798                                       void *arg);
799 #  define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
800 
801 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
802                                     unsigned *len);
803 #  define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
804 # endif
805 
806 __owur int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
807                                  const unsigned char *in, unsigned int inlen,
808                                  const unsigned char *client,
809                                  unsigned int client_len);
810 
811 # define OPENSSL_NPN_UNSUPPORTED 0
812 # define OPENSSL_NPN_NEGOTIATED  1
813 # define OPENSSL_NPN_NO_OVERLAP  2
814 
815 __owur int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
816                                    unsigned int protos_len);
817 __owur int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
818                                unsigned int protos_len);
819 typedef int (*SSL_CTX_alpn_select_cb_func)(SSL *ssl,
820                                            const unsigned char **out,
821                                            unsigned char *outlen,
822                                            const unsigned char *in,
823                                            unsigned int inlen,
824                                            void *arg);
825 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
826                                 SSL_CTX_alpn_select_cb_func cb,
827                                 void *arg);
828 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
829                             unsigned int *len);
830 
831 # ifndef OPENSSL_NO_PSK
832 /*
833  * the maximum length of the buffer given to callbacks containing the
834  * resulting identity/psk
835  */
836 #  define PSK_MAX_IDENTITY_LEN 256
837 #  define PSK_MAX_PSK_LEN 512
838 typedef unsigned int (*SSL_psk_client_cb_func)(SSL *ssl,
839                                                const char *hint,
840                                                char *identity,
841                                                unsigned int max_identity_len,
842                                                unsigned char *psk,
843                                                unsigned int max_psk_len);
844 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
845 void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
846 
847 typedef unsigned int (*SSL_psk_server_cb_func)(SSL *ssl,
848                                                const char *identity,
849                                                unsigned char *psk,
850                                                unsigned int max_psk_len);
851 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
852 void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
853 
854 __owur int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
855 __owur int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
856 const char *SSL_get_psk_identity_hint(const SSL *s);
857 const char *SSL_get_psk_identity(const SSL *s);
858 # endif
859 
860 typedef int (*SSL_psk_find_session_cb_func)(SSL *ssl,
861                                             const unsigned char *identity,
862                                             size_t identity_len,
863                                             SSL_SESSION **sess);
864 typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
865                                            const unsigned char **id,
866                                            size_t *idlen,
867                                            SSL_SESSION **sess);
868 
869 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
870 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
871                                            SSL_psk_find_session_cb_func cb);
872 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
873 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
874                                           SSL_psk_use_session_cb_func cb);
875 
876 /* Register callbacks to handle custom TLS Extensions for client or server. */
877 
878 __owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
879                                          unsigned int ext_type);
880 
881 __owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
882                                          unsigned int ext_type,
883                                          custom_ext_add_cb add_cb,
884                                          custom_ext_free_cb free_cb,
885                                          void *add_arg,
886                                          custom_ext_parse_cb parse_cb,
887                                          void *parse_arg);
888 
889 __owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
890                                          unsigned int ext_type,
891                                          custom_ext_add_cb add_cb,
892                                          custom_ext_free_cb free_cb,
893                                          void *add_arg,
894                                          custom_ext_parse_cb parse_cb,
895                                          void *parse_arg);
896 
897 __owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
898                                   unsigned int context,
899                                   SSL_custom_ext_add_cb_ex add_cb,
900                                   SSL_custom_ext_free_cb_ex free_cb,
901                                   void *add_arg,
902                                   SSL_custom_ext_parse_cb_ex parse_cb,
903                                   void *parse_arg);
904 
905 __owur int SSL_extension_supported(unsigned int ext_type);
906 
907 # define SSL_NOTHING            1
908 # define SSL_WRITING            2
909 # define SSL_READING            3
910 # define SSL_X509_LOOKUP        4
911 # define SSL_ASYNC_PAUSED       5
912 # define SSL_ASYNC_NO_JOBS      6
913 # define SSL_CLIENT_HELLO_CB    7
914 # define SSL_RETRY_VERIFY       8
915 
916 /* These will only be used when doing non-blocking IO */
917 # define SSL_want_nothing(s)         (SSL_want(s) == SSL_NOTHING)
918 # define SSL_want_read(s)            (SSL_want(s) == SSL_READING)
919 # define SSL_want_write(s)           (SSL_want(s) == SSL_WRITING)
920 # define SSL_want_x509_lookup(s)     (SSL_want(s) == SSL_X509_LOOKUP)
921 # define SSL_want_retry_verify(s)    (SSL_want(s) == SSL_RETRY_VERIFY)
922 # define SSL_want_async(s)           (SSL_want(s) == SSL_ASYNC_PAUSED)
923 # define SSL_want_async_job(s)       (SSL_want(s) == SSL_ASYNC_NO_JOBS)
924 # define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
925 
926 # define SSL_MAC_FLAG_READ_MAC_STREAM 1
927 # define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
928 # define SSL_MAC_FLAG_READ_MAC_TLSTREE 4
929 # define SSL_MAC_FLAG_WRITE_MAC_TLSTREE 8
930 
931 /*
932  * A callback for logging out TLS key material. This callback should log out
933  * |line| followed by a newline.
934  */
935 typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);
936 
937 /*
938  * SSL_CTX_set_keylog_callback configures a callback to log key material. This
939  * is intended for debugging use with tools like Wireshark. The cb function
940  * should log line followed by a newline.
941  */
942 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
943 
944 /*
945  * SSL_CTX_get_keylog_callback returns the callback configured by
946  * SSL_CTX_set_keylog_callback.
947  */
948 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
949 
950 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
951 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
952 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
953 uint32_t SSL_get_max_early_data(const SSL *s);
954 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
955 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
956 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
957 uint32_t SSL_get_recv_max_early_data(const SSL *s);
958 
959 #ifdef __cplusplus
960 }
961 #endif
962 
963 # include <openssl/ssl2.h>
964 # include <openssl/ssl3.h>
965 # include <openssl/tls1.h>      /* This is mostly sslv3 with a few tweaks */
966 # include <openssl/dtls1.h>     /* Datagram TLS */
967 # include <openssl/srtp.h>      /* Support for the use_srtp extension */
968 
969 #ifdef  __cplusplus
970 extern "C" {
971 #endif
972 
973 /*
974  * These need to be after the above set of includes due to a compiler bug
975  * in VisualStudio 2015
976  */
977 SKM_DEFINE_STACK_OF_INTERNAL(SSL_CIPHER, const SSL_CIPHER, SSL_CIPHER)
978 #define sk_SSL_CIPHER_num(sk) OPENSSL_sk_num(ossl_check_const_SSL_CIPHER_sk_type(sk))
979 #define sk_SSL_CIPHER_value(sk, idx) ((const SSL_CIPHER *)OPENSSL_sk_value(ossl_check_const_SSL_CIPHER_sk_type(sk), (idx)))
980 #define sk_SSL_CIPHER_new(cmp) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new(ossl_check_SSL_CIPHER_compfunc_type(cmp)))
981 #define sk_SSL_CIPHER_new_null() ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_null())
982 #define sk_SSL_CIPHER_new_reserve(cmp, n) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_reserve(ossl_check_SSL_CIPHER_compfunc_type(cmp), (n)))
983 #define sk_SSL_CIPHER_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SSL_CIPHER_sk_type(sk), (n))
984 #define sk_SSL_CIPHER_free(sk) OPENSSL_sk_free(ossl_check_SSL_CIPHER_sk_type(sk))
985 #define sk_SSL_CIPHER_zero(sk) OPENSSL_sk_zero(ossl_check_SSL_CIPHER_sk_type(sk))
986 #define sk_SSL_CIPHER_delete(sk, i) ((const SSL_CIPHER *)OPENSSL_sk_delete(ossl_check_SSL_CIPHER_sk_type(sk), (i)))
987 #define sk_SSL_CIPHER_delete_ptr(sk, ptr) ((const SSL_CIPHER *)OPENSSL_sk_delete_ptr(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr)))
988 #define sk_SSL_CIPHER_push(sk, ptr) OPENSSL_sk_push(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
989 #define sk_SSL_CIPHER_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
990 #define sk_SSL_CIPHER_pop(sk) ((const SSL_CIPHER *)OPENSSL_sk_pop(ossl_check_SSL_CIPHER_sk_type(sk)))
991 #define sk_SSL_CIPHER_shift(sk) ((const SSL_CIPHER *)OPENSSL_sk_shift(ossl_check_SSL_CIPHER_sk_type(sk)))
992 #define sk_SSL_CIPHER_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SSL_CIPHER_sk_type(sk),ossl_check_SSL_CIPHER_freefunc_type(freefunc))
993 #define sk_SSL_CIPHER_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), (idx))
994 #define sk_SSL_CIPHER_set(sk, idx, ptr) ((const SSL_CIPHER *)OPENSSL_sk_set(ossl_check_SSL_CIPHER_sk_type(sk), (idx), ossl_check_SSL_CIPHER_type(ptr)))
995 #define sk_SSL_CIPHER_find(sk, ptr) OPENSSL_sk_find(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
996 #define sk_SSL_CIPHER_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
997 #define sk_SSL_CIPHER_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), pnum)
998 #define sk_SSL_CIPHER_sort(sk) OPENSSL_sk_sort(ossl_check_SSL_CIPHER_sk_type(sk))
999 #define sk_SSL_CIPHER_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SSL_CIPHER_sk_type(sk))
1000 #define sk_SSL_CIPHER_dup(sk) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_dup(ossl_check_const_SSL_CIPHER_sk_type(sk)))
1001 #define sk_SSL_CIPHER_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_deep_copy(ossl_check_const_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_copyfunc_type(copyfunc), ossl_check_SSL_CIPHER_freefunc_type(freefunc)))
1002 #define sk_SSL_CIPHER_set_cmp_func(sk, cmp) ((sk_SSL_CIPHER_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_compfunc_type(cmp)))
1003 SKM_DEFINE_STACK_OF_INTERNAL(SSL_COMP, SSL_COMP, SSL_COMP)
1004 #define sk_SSL_COMP_num(sk) OPENSSL_sk_num(ossl_check_const_SSL_COMP_sk_type(sk))
1005 #define sk_SSL_COMP_value(sk, idx) ((SSL_COMP *)OPENSSL_sk_value(ossl_check_const_SSL_COMP_sk_type(sk), (idx)))
1006 #define sk_SSL_COMP_new(cmp) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new(ossl_check_SSL_COMP_compfunc_type(cmp)))
1007 #define sk_SSL_COMP_new_null() ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new_null())
1008 #define sk_SSL_COMP_new_reserve(cmp, n) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new_reserve(ossl_check_SSL_COMP_compfunc_type(cmp), (n)))
1009 #define sk_SSL_COMP_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SSL_COMP_sk_type(sk), (n))
1010 #define sk_SSL_COMP_free(sk) OPENSSL_sk_free(ossl_check_SSL_COMP_sk_type(sk))
1011 #define sk_SSL_COMP_zero(sk) OPENSSL_sk_zero(ossl_check_SSL_COMP_sk_type(sk))
1012 #define sk_SSL_COMP_delete(sk, i) ((SSL_COMP *)OPENSSL_sk_delete(ossl_check_SSL_COMP_sk_type(sk), (i)))
1013 #define sk_SSL_COMP_delete_ptr(sk, ptr) ((SSL_COMP *)OPENSSL_sk_delete_ptr(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr)))
1014 #define sk_SSL_COMP_push(sk, ptr) OPENSSL_sk_push(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1015 #define sk_SSL_COMP_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1016 #define sk_SSL_COMP_pop(sk) ((SSL_COMP *)OPENSSL_sk_pop(ossl_check_SSL_COMP_sk_type(sk)))
1017 #define sk_SSL_COMP_shift(sk) ((SSL_COMP *)OPENSSL_sk_shift(ossl_check_SSL_COMP_sk_type(sk)))
1018 #define sk_SSL_COMP_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SSL_COMP_sk_type(sk),ossl_check_SSL_COMP_freefunc_type(freefunc))
1019 #define sk_SSL_COMP_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr), (idx))
1020 #define sk_SSL_COMP_set(sk, idx, ptr) ((SSL_COMP *)OPENSSL_sk_set(ossl_check_SSL_COMP_sk_type(sk), (idx), ossl_check_SSL_COMP_type(ptr)))
1021 #define sk_SSL_COMP_find(sk, ptr) OPENSSL_sk_find(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1022 #define sk_SSL_COMP_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1023 #define sk_SSL_COMP_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr), pnum)
1024 #define sk_SSL_COMP_sort(sk) OPENSSL_sk_sort(ossl_check_SSL_COMP_sk_type(sk))
1025 #define sk_SSL_COMP_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SSL_COMP_sk_type(sk))
1026 #define sk_SSL_COMP_dup(sk) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_dup(ossl_check_const_SSL_COMP_sk_type(sk)))
1027 #define sk_SSL_COMP_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_deep_copy(ossl_check_const_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_copyfunc_type(copyfunc), ossl_check_SSL_COMP_freefunc_type(freefunc)))
1028 #define sk_SSL_COMP_set_cmp_func(sk, cmp) ((sk_SSL_COMP_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_compfunc_type(cmp)))
1029 
1030 
1031 /* compatibility */
1032 # define SSL_set_app_data(s,arg)         (SSL_set_ex_data(s,0,(char *)(arg)))
1033 # define SSL_get_app_data(s)             (SSL_get_ex_data(s,0))
1034 # define SSL_SESSION_set_app_data(s,a)   (SSL_SESSION_set_ex_data(s,0, \
1035                                                                   (char *)(a)))
1036 # define SSL_SESSION_get_app_data(s)     (SSL_SESSION_get_ex_data(s,0))
1037 # define SSL_CTX_get_app_data(ctx)       (SSL_CTX_get_ex_data(ctx,0))
1038 # define SSL_CTX_set_app_data(ctx,arg)   (SSL_CTX_set_ex_data(ctx,0, \
1039                                                               (char *)(arg)))
1040 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1041 OSSL_DEPRECATEDIN_1_1_0 void SSL_set_debug(SSL *s, int debug);
1042 # endif
1043 
1044 /* TLSv1.3 KeyUpdate message types */
1045 /* -1 used so that this is an invalid value for the on-the-wire protocol */
1046 #define SSL_KEY_UPDATE_NONE             -1
1047 /* Values as defined for the on-the-wire protocol */
1048 #define SSL_KEY_UPDATE_NOT_REQUESTED     0
1049 #define SSL_KEY_UPDATE_REQUESTED         1
1050 
1051 /*
1052  * The valid handshake states (one for each type message sent and one for each
1053  * type of message received). There are also two "special" states:
1054  * TLS = TLS or DTLS state
1055  * DTLS = DTLS specific state
1056  * CR/SR = Client Read/Server Read
1057  * CW/SW = Client Write/Server Write
1058  *
1059  * The "special" states are:
1060  * TLS_ST_BEFORE = No handshake has been initiated yet
1061  * TLS_ST_OK = A handshake has been successfully completed
1062  */
1063 typedef enum {
1064     TLS_ST_BEFORE,
1065     TLS_ST_OK,
1066     DTLS_ST_CR_HELLO_VERIFY_REQUEST,
1067     TLS_ST_CR_SRVR_HELLO,
1068     TLS_ST_CR_CERT,
1069     TLS_ST_CR_CERT_STATUS,
1070     TLS_ST_CR_KEY_EXCH,
1071     TLS_ST_CR_CERT_REQ,
1072     TLS_ST_CR_SRVR_DONE,
1073     TLS_ST_CR_SESSION_TICKET,
1074     TLS_ST_CR_CHANGE,
1075     TLS_ST_CR_FINISHED,
1076     TLS_ST_CW_CLNT_HELLO,
1077     TLS_ST_CW_CERT,
1078     TLS_ST_CW_KEY_EXCH,
1079     TLS_ST_CW_CERT_VRFY,
1080     TLS_ST_CW_CHANGE,
1081     TLS_ST_CW_NEXT_PROTO,
1082     TLS_ST_CW_FINISHED,
1083     TLS_ST_SW_HELLO_REQ,
1084     TLS_ST_SR_CLNT_HELLO,
1085     DTLS_ST_SW_HELLO_VERIFY_REQUEST,
1086     TLS_ST_SW_SRVR_HELLO,
1087     TLS_ST_SW_CERT,
1088     TLS_ST_SW_KEY_EXCH,
1089     TLS_ST_SW_CERT_REQ,
1090     TLS_ST_SW_SRVR_DONE,
1091     TLS_ST_SR_CERT,
1092     TLS_ST_SR_KEY_EXCH,
1093     TLS_ST_SR_CERT_VRFY,
1094     TLS_ST_SR_NEXT_PROTO,
1095     TLS_ST_SR_CHANGE,
1096     TLS_ST_SR_FINISHED,
1097     TLS_ST_SW_SESSION_TICKET,
1098     TLS_ST_SW_CERT_STATUS,
1099     TLS_ST_SW_CHANGE,
1100     TLS_ST_SW_FINISHED,
1101     TLS_ST_SW_ENCRYPTED_EXTENSIONS,
1102     TLS_ST_CR_ENCRYPTED_EXTENSIONS,
1103     TLS_ST_CR_CERT_VRFY,
1104     TLS_ST_SW_CERT_VRFY,
1105     TLS_ST_CR_HELLO_REQ,
1106     TLS_ST_SW_KEY_UPDATE,
1107     TLS_ST_CW_KEY_UPDATE,
1108     TLS_ST_SR_KEY_UPDATE,
1109     TLS_ST_CR_KEY_UPDATE,
1110     TLS_ST_EARLY_DATA,
1111     TLS_ST_PENDING_EARLY_DATA_END,
1112     TLS_ST_CW_END_OF_EARLY_DATA,
1113     TLS_ST_SR_END_OF_EARLY_DATA
1114 } OSSL_HANDSHAKE_STATE;
1115 
1116 /*
1117  * Most of the following state values are no longer used and are defined to be
1118  * the closest equivalent value in the current state machine code. Not all
1119  * defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
1120  * and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
1121  * SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
1122  */
1123 
1124 # define SSL_ST_CONNECT                  0x1000
1125 # define SSL_ST_ACCEPT                   0x2000
1126 
1127 # define SSL_ST_MASK                     0x0FFF
1128 
1129 # define SSL_CB_LOOP                     0x01
1130 # define SSL_CB_EXIT                     0x02
1131 # define SSL_CB_READ                     0x04
1132 # define SSL_CB_WRITE                    0x08
1133 # define SSL_CB_ALERT                    0x4000/* used in callback */
1134 # define SSL_CB_READ_ALERT               (SSL_CB_ALERT|SSL_CB_READ)
1135 # define SSL_CB_WRITE_ALERT              (SSL_CB_ALERT|SSL_CB_WRITE)
1136 # define SSL_CB_ACCEPT_LOOP              (SSL_ST_ACCEPT|SSL_CB_LOOP)
1137 # define SSL_CB_ACCEPT_EXIT              (SSL_ST_ACCEPT|SSL_CB_EXIT)
1138 # define SSL_CB_CONNECT_LOOP             (SSL_ST_CONNECT|SSL_CB_LOOP)
1139 # define SSL_CB_CONNECT_EXIT             (SSL_ST_CONNECT|SSL_CB_EXIT)
1140 # define SSL_CB_HANDSHAKE_START          0x10
1141 # define SSL_CB_HANDSHAKE_DONE           0x20
1142 
1143 /* Is the SSL_connection established? */
1144 # define SSL_in_connect_init(a)          (SSL_in_init(a) && !SSL_is_server(a))
1145 # define SSL_in_accept_init(a)           (SSL_in_init(a) && SSL_is_server(a))
1146 int SSL_in_init(const SSL *s);
1147 int SSL_in_before(const SSL *s);
1148 int SSL_is_init_finished(const SSL *s);
1149 
1150 /*
1151  * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
1152  * should not need these
1153  */
1154 # define SSL_ST_READ_HEADER                      0xF0
1155 # define SSL_ST_READ_BODY                        0xF1
1156 # define SSL_ST_READ_DONE                        0xF2
1157 
1158 /*-
1159  * Obtain latest Finished message
1160  *   -- that we sent (SSL_get_finished)
1161  *   -- that we expected from peer (SSL_get_peer_finished).
1162  * Returns length (0 == no Finished so far), copies up to 'count' bytes.
1163  */
1164 size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
1165 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
1166 
1167 /*
1168  * use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
1169  * 'ored' with SSL_VERIFY_PEER if they are desired
1170  */
1171 # define SSL_VERIFY_NONE                 0x00
1172 # define SSL_VERIFY_PEER                 0x01
1173 # define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
1174 # define SSL_VERIFY_CLIENT_ONCE          0x04
1175 # define SSL_VERIFY_POST_HANDSHAKE       0x08
1176 
1177 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1178 #  define OpenSSL_add_ssl_algorithms()   SSL_library_init()
1179 #  define SSLeay_add_ssl_algorithms()    SSL_library_init()
1180 # endif
1181 
1182 /* More backward compatibility */
1183 # define SSL_get_cipher(s) \
1184                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1185 # define SSL_get_cipher_bits(s,np) \
1186                 SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
1187 # define SSL_get_cipher_version(s) \
1188                 SSL_CIPHER_get_version(SSL_get_current_cipher(s))
1189 # define SSL_get_cipher_name(s) \
1190                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1191 # define SSL_get_time(a)         SSL_SESSION_get_time(a)
1192 # define SSL_set_time(a,b)       SSL_SESSION_set_time((a),(b))
1193 # define SSL_get_timeout(a)      SSL_SESSION_get_timeout(a)
1194 # define SSL_set_timeout(a,b)    SSL_SESSION_set_timeout((a),(b))
1195 
1196 # define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
1197 # define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
1198 
1199 DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
1200 # define SSL_AD_REASON_OFFSET            1000/* offset to get SSL_R_... value
1201                                               * from SSL_AD_... */
1202 /* These alert types are for SSLv3 and TLSv1 */
1203 # define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
1204 /* fatal */
1205 # define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE
1206 /* fatal */
1207 # define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC
1208 # define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
1209 # define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
1210 /* fatal */
1211 # define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE
1212 /* fatal */
1213 # define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE
1214 /* Not for TLS */
1215 # define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE
1216 # define SSL_AD_BAD_CERTIFICATE          SSL3_AD_BAD_CERTIFICATE
1217 # define SSL_AD_UNSUPPORTED_CERTIFICATE  SSL3_AD_UNSUPPORTED_CERTIFICATE
1218 # define SSL_AD_CERTIFICATE_REVOKED      SSL3_AD_CERTIFICATE_REVOKED
1219 # define SSL_AD_CERTIFICATE_EXPIRED      SSL3_AD_CERTIFICATE_EXPIRED
1220 # define SSL_AD_CERTIFICATE_UNKNOWN      SSL3_AD_CERTIFICATE_UNKNOWN
1221 /* fatal */
1222 # define SSL_AD_ILLEGAL_PARAMETER        SSL3_AD_ILLEGAL_PARAMETER
1223 /* fatal */
1224 # define SSL_AD_UNKNOWN_CA               TLS1_AD_UNKNOWN_CA
1225 /* fatal */
1226 # define SSL_AD_ACCESS_DENIED            TLS1_AD_ACCESS_DENIED
1227 /* fatal */
1228 # define SSL_AD_DECODE_ERROR             TLS1_AD_DECODE_ERROR
1229 # define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
1230 /* fatal */
1231 # define SSL_AD_EXPORT_RESTRICTION       TLS1_AD_EXPORT_RESTRICTION
1232 /* fatal */
1233 # define SSL_AD_PROTOCOL_VERSION         TLS1_AD_PROTOCOL_VERSION
1234 /* fatal */
1235 # define SSL_AD_INSUFFICIENT_SECURITY    TLS1_AD_INSUFFICIENT_SECURITY
1236 /* fatal */
1237 # define SSL_AD_INTERNAL_ERROR           TLS1_AD_INTERNAL_ERROR
1238 # define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
1239 # define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
1240 # define SSL_AD_MISSING_EXTENSION        TLS13_AD_MISSING_EXTENSION
1241 # define SSL_AD_CERTIFICATE_REQUIRED     TLS13_AD_CERTIFICATE_REQUIRED
1242 # define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
1243 # define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
1244 # define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
1245 # define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
1246 # define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
1247 /* fatal */
1248 # define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY
1249 /* fatal */
1250 # define SSL_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK
1251 # define SSL_AD_NO_APPLICATION_PROTOCOL  TLS1_AD_NO_APPLICATION_PROTOCOL
1252 # define SSL_ERROR_NONE                  0
1253 # define SSL_ERROR_SSL                   1
1254 # define SSL_ERROR_WANT_READ             2
1255 # define SSL_ERROR_WANT_WRITE            3
1256 # define SSL_ERROR_WANT_X509_LOOKUP      4
1257 # define SSL_ERROR_SYSCALL               5/* look at error stack/return
1258                                            * value/errno */
1259 # define SSL_ERROR_ZERO_RETURN           6
1260 # define SSL_ERROR_WANT_CONNECT          7
1261 # define SSL_ERROR_WANT_ACCEPT           8
1262 # define SSL_ERROR_WANT_ASYNC            9
1263 # define SSL_ERROR_WANT_ASYNC_JOB       10
1264 # define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
1265 # define SSL_ERROR_WANT_RETRY_VERIFY    12
1266 
1267 # ifndef OPENSSL_NO_DEPRECATED_3_0
1268 #  define SSL_CTRL_SET_TMP_DH                    3
1269 #  define SSL_CTRL_SET_TMP_ECDH                  4
1270 #  define SSL_CTRL_SET_TMP_DH_CB                 6
1271 # endif
1272 
1273 # define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
1274 # define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
1275 # define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
1276 # define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
1277 # define SSL_CTRL_GET_FLAGS                      13
1278 # define SSL_CTRL_EXTRA_CHAIN_CERT               14
1279 # define SSL_CTRL_SET_MSG_CALLBACK               15
1280 # define SSL_CTRL_SET_MSG_CALLBACK_ARG           16
1281 /* only applies to datagram connections */
1282 # define SSL_CTRL_SET_MTU                17
1283 /* Stats */
1284 # define SSL_CTRL_SESS_NUMBER                    20
1285 # define SSL_CTRL_SESS_CONNECT                   21
1286 # define SSL_CTRL_SESS_CONNECT_GOOD              22
1287 # define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
1288 # define SSL_CTRL_SESS_ACCEPT                    24
1289 # define SSL_CTRL_SESS_ACCEPT_GOOD               25
1290 # define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
1291 # define SSL_CTRL_SESS_HIT                       27
1292 # define SSL_CTRL_SESS_CB_HIT                    28
1293 # define SSL_CTRL_SESS_MISSES                    29
1294 # define SSL_CTRL_SESS_TIMEOUTS                  30
1295 # define SSL_CTRL_SESS_CACHE_FULL                31
1296 # define SSL_CTRL_MODE                           33
1297 # define SSL_CTRL_GET_READ_AHEAD                 40
1298 # define SSL_CTRL_SET_READ_AHEAD                 41
1299 # define SSL_CTRL_SET_SESS_CACHE_SIZE            42
1300 # define SSL_CTRL_GET_SESS_CACHE_SIZE            43
1301 # define SSL_CTRL_SET_SESS_CACHE_MODE            44
1302 # define SSL_CTRL_GET_SESS_CACHE_MODE            45
1303 # define SSL_CTRL_GET_MAX_CERT_LIST              50
1304 # define SSL_CTRL_SET_MAX_CERT_LIST              51
1305 # define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52
1306 /* see tls1.h for macros based on these */
1307 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
1308 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
1309 # define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
1310 # define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
1311 # define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
1312 # define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
1313 # define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
1314 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60 */
1315 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 */
1316 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 */
1317 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
1318 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
1319 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
1320 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
1321 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
1322 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
1323 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
1324 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
1325 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71
1326 # ifndef OPENSSL_NO_DEPRECATED_3_0
1327 #  define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB      72
1328 # endif
1329 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
1330 # define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
1331 # define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77
1332 # define SSL_CTRL_SET_SRP_ARG            78
1333 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
1334 # define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
1335 # define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
1336 # define DTLS_CTRL_GET_TIMEOUT           73
1337 # define DTLS_CTRL_HANDLE_TIMEOUT        74
1338 # define SSL_CTRL_GET_RI_SUPPORT                 76
1339 # define SSL_CTRL_CLEAR_MODE                     78
1340 # define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB      79
1341 # define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
1342 # define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83
1343 # define SSL_CTRL_CHAIN                          88
1344 # define SSL_CTRL_CHAIN_CERT                     89
1345 # define SSL_CTRL_GET_GROUPS                     90
1346 # define SSL_CTRL_SET_GROUPS                     91
1347 # define SSL_CTRL_SET_GROUPS_LIST                92
1348 # define SSL_CTRL_GET_SHARED_GROUP               93
1349 # define SSL_CTRL_SET_SIGALGS                    97
1350 # define SSL_CTRL_SET_SIGALGS_LIST               98
1351 # define SSL_CTRL_CERT_FLAGS                     99
1352 # define SSL_CTRL_CLEAR_CERT_FLAGS               100
1353 # define SSL_CTRL_SET_CLIENT_SIGALGS             101
1354 # define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
1355 # define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
1356 # define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
1357 # define SSL_CTRL_BUILD_CERT_CHAIN               105
1358 # define SSL_CTRL_SET_VERIFY_CERT_STORE          106
1359 # define SSL_CTRL_SET_CHAIN_CERT_STORE           107
1360 # define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
1361 # define SSL_CTRL_GET_PEER_TMP_KEY               109
1362 # define SSL_CTRL_GET_RAW_CIPHERLIST             110
1363 # define SSL_CTRL_GET_EC_POINT_FORMATS           111
1364 # define SSL_CTRL_GET_CHAIN_CERTS                115
1365 # define SSL_CTRL_SELECT_CURRENT_CERT            116
1366 # define SSL_CTRL_SET_CURRENT_CERT               117
1367 # define SSL_CTRL_SET_DH_AUTO                    118
1368 # define DTLS_CTRL_SET_LINK_MTU                  120
1369 # define DTLS_CTRL_GET_LINK_MIN_MTU              121
1370 # define SSL_CTRL_GET_EXTMS_SUPPORT              122
1371 # define SSL_CTRL_SET_MIN_PROTO_VERSION          123
1372 # define SSL_CTRL_SET_MAX_PROTO_VERSION          124
1373 # define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT        125
1374 # define SSL_CTRL_SET_MAX_PIPELINES              126
1375 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE     127
1376 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB       128
1377 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG   129
1378 # define SSL_CTRL_GET_MIN_PROTO_VERSION          130
1379 # define SSL_CTRL_GET_MAX_PROTO_VERSION          131
1380 # define SSL_CTRL_GET_SIGNATURE_NID              132
1381 # define SSL_CTRL_GET_TMP_KEY                    133
1382 # define SSL_CTRL_GET_NEGOTIATED_GROUP           134
1383 # define SSL_CTRL_SET_RETRY_VERIFY               136
1384 # define SSL_CTRL_GET_VERIFY_CERT_STORE          137
1385 # define SSL_CTRL_GET_CHAIN_CERT_STORE           138
1386 # define SSL_CERT_SET_FIRST                      1
1387 # define SSL_CERT_SET_NEXT                       2
1388 # define SSL_CERT_SET_SERVER                     3
1389 # define DTLSv1_get_timeout(ssl, arg) \
1390         SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
1391 # define DTLSv1_handle_timeout(ssl) \
1392         SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
1393 # define SSL_num_renegotiations(ssl) \
1394         SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
1395 # define SSL_clear_num_renegotiations(ssl) \
1396         SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
1397 # define SSL_total_renegotiations(ssl) \
1398         SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
1399 # ifndef OPENSSL_NO_DEPRECATED_3_0
1400 #  define SSL_CTX_set_tmp_dh(ctx,dh) \
1401         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1402 # endif
1403 # define SSL_CTX_set_dh_auto(ctx, onoff) \
1404         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1405 # define SSL_set_dh_auto(s, onoff) \
1406         SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1407 # ifndef OPENSSL_NO_DEPRECATED_3_0
1408 #  define SSL_set_tmp_dh(ssl,dh) \
1409         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1410 # endif
1411 # ifndef OPENSSL_NO_DEPRECATED_3_0
1412 #  define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
1413         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1414 #  define SSL_set_tmp_ecdh(ssl,ecdh) \
1415         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1416 # endif
1417 # define SSL_CTX_add_extra_chain_cert(ctx,x509) \
1418         SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
1419 # define SSL_CTX_get_extra_chain_certs(ctx,px509) \
1420         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
1421 # define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
1422         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
1423 # define SSL_CTX_clear_extra_chain_certs(ctx) \
1424         SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
1425 # define SSL_CTX_set0_chain(ctx,sk) \
1426         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1427 # define SSL_CTX_set1_chain(ctx,sk) \
1428         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1429 # define SSL_CTX_add0_chain_cert(ctx,x509) \
1430         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1431 # define SSL_CTX_add1_chain_cert(ctx,x509) \
1432         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1433 # define SSL_CTX_get0_chain_certs(ctx,px509) \
1434         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1435 # define SSL_CTX_clear_chain_certs(ctx) \
1436         SSL_CTX_set0_chain(ctx,NULL)
1437 # define SSL_CTX_build_cert_chain(ctx, flags) \
1438         SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1439 # define SSL_CTX_select_current_cert(ctx,x509) \
1440         SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1441 # define SSL_CTX_set_current_cert(ctx, op) \
1442         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1443 # define SSL_CTX_set0_verify_cert_store(ctx,st) \
1444         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1445 # define SSL_CTX_set1_verify_cert_store(ctx,st) \
1446         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1447 # define SSL_CTX_get0_verify_cert_store(ctx,st) \
1448         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1449 # define SSL_CTX_set0_chain_cert_store(ctx,st) \
1450         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1451 # define SSL_CTX_set1_chain_cert_store(ctx,st) \
1452         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1453 # define SSL_CTX_get0_chain_cert_store(ctx,st) \
1454         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1455 # define SSL_set0_chain(s,sk) \
1456         SSL_ctrl(s,SSL_CTRL_CHAIN,0,(char *)(sk))
1457 # define SSL_set1_chain(s,sk) \
1458         SSL_ctrl(s,SSL_CTRL_CHAIN,1,(char *)(sk))
1459 # define SSL_add0_chain_cert(s,x509) \
1460         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1461 # define SSL_add1_chain_cert(s,x509) \
1462         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1463 # define SSL_get0_chain_certs(s,px509) \
1464         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1465 # define SSL_clear_chain_certs(s) \
1466         SSL_set0_chain(s,NULL)
1467 # define SSL_build_cert_chain(s, flags) \
1468         SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1469 # define SSL_select_current_cert(s,x509) \
1470         SSL_ctrl(s,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1471 # define SSL_set_current_cert(s,op) \
1472         SSL_ctrl(s,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1473 # define SSL_set0_verify_cert_store(s,st) \
1474         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1475 # define SSL_set1_verify_cert_store(s,st) \
1476         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1477 #define SSL_get0_verify_cert_store(s,st) \
1478         SSL_ctrl(s,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1479 # define SSL_set0_chain_cert_store(s,st) \
1480         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1481 # define SSL_set1_chain_cert_store(s,st) \
1482         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1483 #define SSL_get0_chain_cert_store(s,st) \
1484         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1485 
1486 # define SSL_get1_groups(s, glist) \
1487         SSL_ctrl(s,SSL_CTRL_GET_GROUPS,0,(int*)(glist))
1488 # define SSL_CTX_set1_groups(ctx, glist, glistlen) \
1489         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(int *)(glist))
1490 # define SSL_CTX_set1_groups_list(ctx, s) \
1491         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1492 # define SSL_set1_groups(s, glist, glistlen) \
1493         SSL_ctrl(s,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1494 # define SSL_set1_groups_list(s, str) \
1495         SSL_ctrl(s,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(str))
1496 # define SSL_get_shared_group(s, n) \
1497         SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
1498 # define SSL_get_negotiated_group(s) \
1499         SSL_ctrl(s,SSL_CTRL_GET_NEGOTIATED_GROUP,0,NULL)
1500 # define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
1501         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1502 # define SSL_CTX_set1_sigalgs_list(ctx, s) \
1503         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1504 # define SSL_set1_sigalgs(s, slist, slistlen) \
1505         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1506 # define SSL_set1_sigalgs_list(s, str) \
1507         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(str))
1508 # define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
1509         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1510 # define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
1511         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1512 # define SSL_set1_client_sigalgs(s, slist, slistlen) \
1513         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1514 # define SSL_set1_client_sigalgs_list(s, str) \
1515         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(str))
1516 # define SSL_get0_certificate_types(s, clist) \
1517         SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
1518 # define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
1519         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
1520                      (char *)(clist))
1521 # define SSL_set1_client_certificate_types(s, clist, clistlen) \
1522         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
1523 # define SSL_get_signature_nid(s, pn) \
1524         SSL_ctrl(s,SSL_CTRL_GET_SIGNATURE_NID,0,pn)
1525 # define SSL_get_peer_signature_nid(s, pn) \
1526         SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
1527 # define SSL_get_peer_tmp_key(s, pk) \
1528         SSL_ctrl(s,SSL_CTRL_GET_PEER_TMP_KEY,0,pk)
1529 # define SSL_get_tmp_key(s, pk) \
1530         SSL_ctrl(s,SSL_CTRL_GET_TMP_KEY,0,pk)
1531 # define SSL_get0_raw_cipherlist(s, plst) \
1532         SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
1533 # define SSL_get0_ec_point_formats(s, plst) \
1534         SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
1535 # define SSL_CTX_set_min_proto_version(ctx, version) \
1536         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1537 # define SSL_CTX_set_max_proto_version(ctx, version) \
1538         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1539 # define SSL_CTX_get_min_proto_version(ctx) \
1540         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1541 # define SSL_CTX_get_max_proto_version(ctx) \
1542         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1543 # define SSL_set_min_proto_version(s, version) \
1544         SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1545 # define SSL_set_max_proto_version(s, version) \
1546         SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1547 # define SSL_get_min_proto_version(s) \
1548         SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1549 # define SSL_get_max_proto_version(s) \
1550         SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1551 
1552 const char *SSL_group_to_name(SSL *s, int id);
1553 
1554 /* Backwards compatibility, original 1.1.0 names */
1555 # define SSL_CTRL_GET_SERVER_TMP_KEY \
1556          SSL_CTRL_GET_PEER_TMP_KEY
1557 # define SSL_get_server_tmp_key(s, pk) \
1558          SSL_get_peer_tmp_key(s, pk)
1559 
1560 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey);
1561 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey);
1562 
1563 /*
1564  * The following symbol names are old and obsolete. They are kept
1565  * for compatibility reasons only and should not be used anymore.
1566  */
1567 # define SSL_CTRL_GET_CURVES           SSL_CTRL_GET_GROUPS
1568 # define SSL_CTRL_SET_CURVES           SSL_CTRL_SET_GROUPS
1569 # define SSL_CTRL_SET_CURVES_LIST      SSL_CTRL_SET_GROUPS_LIST
1570 # define SSL_CTRL_GET_SHARED_CURVE     SSL_CTRL_GET_SHARED_GROUP
1571 
1572 # define SSL_get1_curves               SSL_get1_groups
1573 # define SSL_CTX_set1_curves           SSL_CTX_set1_groups
1574 # define SSL_CTX_set1_curves_list      SSL_CTX_set1_groups_list
1575 # define SSL_set1_curves               SSL_set1_groups
1576 # define SSL_set1_curves_list          SSL_set1_groups_list
1577 # define SSL_get_shared_curve          SSL_get_shared_group
1578 
1579 
1580 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1581 /* Provide some compatibility macros for removed functionality. */
1582 #  define SSL_CTX_need_tmp_RSA(ctx)                0
1583 #  define SSL_CTX_set_tmp_rsa(ctx,rsa)             1
1584 #  define SSL_need_tmp_RSA(ssl)                    0
1585 #  define SSL_set_tmp_rsa(ssl,rsa)                 1
1586 #  define SSL_CTX_set_ecdh_auto(dummy, onoff)      ((onoff) != 0)
1587 #  define SSL_set_ecdh_auto(dummy, onoff)          ((onoff) != 0)
1588 /*
1589  * We "pretend" to call the callback to avoid warnings about unused static
1590  * functions.
1591  */
1592 #  define SSL_CTX_set_tmp_rsa_callback(ctx, cb)    while(0) (cb)(NULL, 0, 0)
1593 #  define SSL_set_tmp_rsa_callback(ssl, cb)        while(0) (cb)(NULL, 0, 0)
1594 # endif
1595 __owur const BIO_METHOD *BIO_f_ssl(void);
1596 __owur BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
1597 __owur BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
1598 __owur BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
1599 __owur int BIO_ssl_copy_session_id(BIO *to, BIO *from);
1600 void BIO_ssl_shutdown(BIO *ssl_bio);
1601 
1602 __owur int SSL_CTX_set_cipher_list(SSL_CTX *, const char *str);
1603 __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
1604 __owur SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
1605                                const SSL_METHOD *meth);
1606 int SSL_CTX_up_ref(SSL_CTX *ctx);
1607 void SSL_CTX_free(SSL_CTX *);
1608 __owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
1609 __owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
1610 __owur X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
1611 void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
1612 void SSL_CTX_set1_cert_store(SSL_CTX *, X509_STORE *);
1613 __owur int SSL_want(const SSL *s);
1614 __owur int SSL_clear(SSL *s);
1615 
1616 void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
1617 
1618 __owur const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
1619 __owur const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s);
1620 __owur int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits);
1621 __owur const char *SSL_CIPHER_get_version(const SSL_CIPHER *c);
1622 __owur const char *SSL_CIPHER_get_name(const SSL_CIPHER *c);
1623 __owur const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
1624 __owur const char *OPENSSL_cipher_name(const char *rfc_name);
1625 __owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
1626 __owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
1627 __owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
1628 __owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
1629 __owur const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c);
1630 __owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
1631 
1632 __owur int SSL_get_fd(const SSL *s);
1633 __owur int SSL_get_rfd(const SSL *s);
1634 __owur int SSL_get_wfd(const SSL *s);
1635 __owur const char *SSL_get_cipher_list(const SSL *s, int n);
1636 __owur char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size);
1637 __owur int SSL_get_read_ahead(const SSL *s);
1638 __owur int SSL_pending(const SSL *s);
1639 __owur int SSL_has_pending(const SSL *s);
1640 # ifndef OPENSSL_NO_SOCK
1641 __owur int SSL_set_fd(SSL *s, int fd);
1642 __owur int SSL_set_rfd(SSL *s, int fd);
1643 __owur int SSL_set_wfd(SSL *s, int fd);
1644 # endif
1645 void SSL_set0_rbio(SSL *s, BIO *rbio);
1646 void SSL_set0_wbio(SSL *s, BIO *wbio);
1647 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio);
1648 __owur BIO *SSL_get_rbio(const SSL *s);
1649 __owur BIO *SSL_get_wbio(const SSL *s);
1650 __owur int SSL_set_cipher_list(SSL *s, const char *str);
1651 __owur int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str);
1652 __owur int SSL_set_ciphersuites(SSL *s, const char *str);
1653 void SSL_set_read_ahead(SSL *s, int yes);
1654 __owur int SSL_get_verify_mode(const SSL *s);
1655 __owur int SSL_get_verify_depth(const SSL *s);
1656 __owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
1657 void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
1658 void SSL_set_verify_depth(SSL *s, int depth);
1659 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg);
1660 # ifndef OPENSSL_NO_DEPRECATED_3_0
1661 OSSL_DEPRECATEDIN_3_0 __owur int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
1662 OSSL_DEPRECATEDIN_3_0
1663 __owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl,
1664                                       const unsigned char *d, long len);
1665 # endif
1666 __owur int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
1667 __owur int SSL_use_PrivateKey_ASN1(int pk, SSL *ssl, const unsigned char *d,
1668                                    long len);
1669 __owur int SSL_use_certificate(SSL *ssl, X509 *x);
1670 __owur int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);
1671 __owur int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
1672                                 STACK_OF(X509) *chain, int override);
1673 
1674 
1675 /* serverinfo file format versions */
1676 # define SSL_SERVERINFOV1   1
1677 # define SSL_SERVERINFOV2   2
1678 
1679 /* Set serverinfo data for the current active cert. */
1680 __owur int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
1681                                   size_t serverinfo_length);
1682 __owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
1683                                      const unsigned char *serverinfo,
1684                                      size_t serverinfo_length);
1685 __owur int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
1686 
1687 #ifndef OPENSSL_NO_DEPRECATED_3_0
1688 OSSL_DEPRECATEDIN_3_0
1689 __owur int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
1690 #endif
1691 
1692 __owur int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
1693 __owur int SSL_use_certificate_file(SSL *ssl, const char *file, int type);
1694 
1695 #ifndef OPENSSL_NO_DEPRECATED_3_0
1696 OSSL_DEPRECATEDIN_3_0
1697 __owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file,
1698                                           int type);
1699 #endif
1700 __owur int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
1701                                        int type);
1702 __owur int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
1703                                         int type);
1704 /* PEM type */
1705 __owur int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);
1706 __owur int SSL_use_certificate_chain_file(SSL *ssl, const char *file);
1707 __owur STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
1708 __owur STACK_OF(X509_NAME)
1709 *SSL_load_client_CA_file_ex(const char *file, OSSL_LIB_CTX *libctx,
1710                             const char *propq);
1711 __owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1712                                                const char *file);
1713 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1714                                        const char *dir);
1715 int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1716                                        const char *uri);
1717 
1718 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1719 #  define SSL_load_error_strings() \
1720     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
1721                      | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
1722 # endif
1723 
1724 __owur const char *SSL_state_string(const SSL *s);
1725 __owur const char *SSL_rstate_string(const SSL *s);
1726 __owur const char *SSL_state_string_long(const SSL *s);
1727 __owur const char *SSL_rstate_string_long(const SSL *s);
1728 __owur long SSL_SESSION_get_time(const SSL_SESSION *s);
1729 __owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
1730 __owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
1731 __owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
1732 __owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
1733 __owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
1734 
1735 __owur const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s);
1736 __owur int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname);
1737 void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
1738                                     const unsigned char **alpn,
1739                                     size_t *len);
1740 __owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
1741                                           const unsigned char *alpn,
1742                                           size_t len);
1743 __owur const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s);
1744 __owur int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher);
1745 __owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
1746 __owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
1747 void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
1748                              size_t *len);
1749 __owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
1750 __owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
1751                                           uint32_t max_early_data);
1752 __owur int SSL_copy_session_id(SSL *to, const SSL *from);
1753 __owur X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
1754 __owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
1755                                        const unsigned char *sid_ctx,
1756                                        unsigned int sid_ctx_len);
1757 __owur int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
1758                                unsigned int sid_len);
1759 __owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
1760 
1761 __owur SSL_SESSION *SSL_SESSION_new(void);
1762 __owur SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src);
1763 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
1764                                         unsigned int *len);
1765 const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
1766                                                  unsigned int *len);
1767 __owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
1768 # ifndef OPENSSL_NO_STDIO
1769 int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *ses);
1770 # endif
1771 int SSL_SESSION_print(BIO *fp, const SSL_SESSION *ses);
1772 int SSL_SESSION_print_keylog(BIO *bp, const SSL_SESSION *x);
1773 int SSL_SESSION_up_ref(SSL_SESSION *ses);
1774 void SSL_SESSION_free(SSL_SESSION *ses);
1775 __owur int i2d_SSL_SESSION(const SSL_SESSION *in, unsigned char **pp);
1776 __owur int SSL_set_session(SSL *to, SSL_SESSION *session);
1777 int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
1778 int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
1779 __owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
1780 __owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
1781 __owur int SSL_has_matching_session_id(const SSL *s,
1782                                        const unsigned char *id,
1783                                        unsigned int id_len);
1784 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
1785                              long length);
1786 
1787 # ifdef OPENSSL_X509_H
1788 __owur X509 *SSL_get0_peer_certificate(const SSL *s);
1789 __owur X509 *SSL_get1_peer_certificate(const SSL *s);
1790 /* Deprecated in 3.0.0 */
1791 #  ifndef OPENSSL_NO_DEPRECATED_3_0
1792 #   define SSL_get_peer_certificate SSL_get1_peer_certificate
1793 #  endif
1794 # endif
1795 
1796 __owur STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);
1797 
1798 __owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
1799 __owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
1800 __owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
1801 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
1802 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
1803 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1804                                       int (*cb) (X509_STORE_CTX *, void *),
1805                                       void *arg);
1806 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
1807                          void *arg);
1808 # ifndef OPENSSL_NO_DEPRECATED_3_0
1809 OSSL_DEPRECATEDIN_3_0
1810 __owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
1811 OSSL_DEPRECATEDIN_3_0
1812 __owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
1813                                           long len);
1814 # endif
1815 __owur int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
1816 __owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
1817                                        const unsigned char *d, long len);
1818 __owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
1819 __owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
1820                                         const unsigned char *d);
1821 __owur int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
1822                                     STACK_OF(X509) *chain, int override);
1823 
1824 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
1825 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
1826 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx);
1827 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx);
1828 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb);
1829 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u);
1830 pem_password_cb *SSL_get_default_passwd_cb(SSL *s);
1831 void *SSL_get_default_passwd_cb_userdata(SSL *s);
1832 
1833 __owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
1834 __owur int SSL_check_private_key(const SSL *ctx);
1835 
1836 __owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
1837                                           const unsigned char *sid_ctx,
1838                                           unsigned int sid_ctx_len);
1839 
1840 SSL *SSL_new(SSL_CTX *ctx);
1841 int SSL_up_ref(SSL *s);
1842 int SSL_is_dtls(const SSL *s);
1843 __owur int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
1844                                       unsigned int sid_ctx_len);
1845 
1846 __owur int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
1847 __owur int SSL_set_purpose(SSL *ssl, int purpose);
1848 __owur int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
1849 __owur int SSL_set_trust(SSL *ssl, int trust);
1850 
1851 __owur int SSL_set1_host(SSL *s, const char *hostname);
1852 __owur int SSL_add1_host(SSL *s, const char *hostname);
1853 __owur const char *SSL_get0_peername(SSL *s);
1854 void SSL_set_hostflags(SSL *s, unsigned int flags);
1855 
1856 __owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
1857 __owur int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md,
1858                                   uint8_t mtype, uint8_t ord);
1859 __owur int SSL_dane_enable(SSL *s, const char *basedomain);
1860 __owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1861                              uint8_t mtype, const unsigned char *data, size_t dlen);
1862 __owur int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki);
1863 __owur int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1864                               uint8_t *mtype, const unsigned char **data,
1865                               size_t *dlen);
1866 /*
1867  * Bridge opacity barrier between libcrypt and libssl, also needed to support
1868  * offline testing in test/danetest.c
1869  */
1870 SSL_DANE *SSL_get0_dane(SSL *ssl);
1871 /*
1872  * DANE flags
1873  */
1874 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
1875 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
1876 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
1877 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
1878 
1879 __owur int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
1880 __owur int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);
1881 
1882 __owur X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
1883 __owur X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
1884 
1885 # ifndef OPENSSL_NO_SRP
1886 #  ifndef OPENSSL_NO_DEPRECATED_3_0
1887 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name);
1888 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password);
1889 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
1890 OSSL_DEPRECATEDIN_3_0
1891 int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
1892                                         char *(*cb) (SSL *, void *));
1893 OSSL_DEPRECATEDIN_3_0
1894 int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
1895                                           int (*cb) (SSL *, void *));
1896 OSSL_DEPRECATEDIN_3_0
1897 int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
1898                                       int (*cb) (SSL *, int *, void *));
1899 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
1900 
1901 OSSL_DEPRECATEDIN_3_0
1902 int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
1903                              BIGNUM *sa, BIGNUM *v, char *info);
1904 OSSL_DEPRECATEDIN_3_0
1905 int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
1906                                 const char *grp);
1907 
1908 OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_g(SSL *s);
1909 OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_N(SSL *s);
1910 
1911 OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_username(SSL *s);
1912 OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_userinfo(SSL *s);
1913 #  endif
1914 # endif
1915 
1916 /*
1917  * ClientHello callback and helpers.
1918  */
1919 
1920 # define SSL_CLIENT_HELLO_SUCCESS 1
1921 # define SSL_CLIENT_HELLO_ERROR   0
1922 # define SSL_CLIENT_HELLO_RETRY   (-1)
1923 
1924 typedef int (*SSL_client_hello_cb_fn) (SSL *s, int *al, void *arg);
1925 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
1926                                  void *arg);
1927 int SSL_client_hello_isv2(SSL *s);
1928 unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
1929 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out);
1930 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out);
1931 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out);
1932 size_t SSL_client_hello_get0_compression_methods(SSL *s,
1933                                                  const unsigned char **out);
1934 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen);
1935 int SSL_client_hello_get0_ext(SSL *s, unsigned int type,
1936                               const unsigned char **out, size_t *outlen);
1937 
1938 void SSL_certs_clear(SSL *s);
1939 void SSL_free(SSL *ssl);
1940 # ifdef OSSL_ASYNC_FD
1941 /*
1942  * Windows application developer has to include windows.h to use these.
1943  */
1944 __owur int SSL_waiting_for_async(SSL *s);
1945 __owur int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds);
1946 __owur int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd,
1947                                      size_t *numaddfds, OSSL_ASYNC_FD *delfd,
1948                                      size_t *numdelfds);
1949 __owur int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback);
1950 __owur int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg);
1951 __owur int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback);
1952 __owur int SSL_set_async_callback_arg(SSL *s, void *arg);
1953 __owur int SSL_get_async_status(SSL *s, int *status);
1954 
1955 # endif
1956 __owur int SSL_accept(SSL *ssl);
1957 __owur int SSL_stateless(SSL *s);
1958 __owur int SSL_connect(SSL *ssl);
1959 __owur int SSL_read(SSL *ssl, void *buf, int num);
1960 __owur int SSL_read_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1961 
1962 # define SSL_READ_EARLY_DATA_ERROR   0
1963 # define SSL_READ_EARLY_DATA_SUCCESS 1
1964 # define SSL_READ_EARLY_DATA_FINISH  2
1965 
1966 __owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
1967                                size_t *readbytes);
1968 __owur int SSL_peek(SSL *ssl, void *buf, int num);
1969 __owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1970 __owur ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size,
1971                                  int flags);
1972 __owur int SSL_write(SSL *ssl, const void *buf, int num);
1973 __owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
1974 __owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
1975                                 size_t *written);
1976 long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg);
1977 long SSL_callback_ctrl(SSL *, int, void (*)(void));
1978 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg);
1979 long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));
1980 
1981 # define SSL_EARLY_DATA_NOT_SENT    0
1982 # define SSL_EARLY_DATA_REJECTED    1
1983 # define SSL_EARLY_DATA_ACCEPTED    2
1984 
1985 __owur int SSL_get_early_data_status(const SSL *s);
1986 
1987 __owur int SSL_get_error(const SSL *s, int ret_code);
1988 __owur const char *SSL_get_version(const SSL *s);
1989 
1990 /* This sets the 'default' SSL version that SSL_new() will create */
1991 # ifndef OPENSSL_NO_DEPRECATED_3_0
1992 OSSL_DEPRECATEDIN_3_0
1993 __owur int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);
1994 # endif
1995 
1996 # ifndef OPENSSL_NO_SSL3_METHOD
1997 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1998 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_method(void); /* SSLv3 */
1999 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_server_method(void);
2000 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_client_method(void);
2001 #  endif
2002 # endif
2003 
2004 #define SSLv23_method           TLS_method
2005 #define SSLv23_server_method    TLS_server_method
2006 #define SSLv23_client_method    TLS_client_method
2007 
2008 /* Negotiate highest available SSL/TLS version */
2009 __owur const SSL_METHOD *TLS_method(void);
2010 __owur const SSL_METHOD *TLS_server_method(void);
2011 __owur const SSL_METHOD *TLS_client_method(void);
2012 
2013 # ifndef OPENSSL_NO_TLS1_METHOD
2014 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
2015 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_method(void); /* TLSv1.0 */
2016 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_server_method(void);
2017 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_client_method(void);
2018 #  endif
2019 # endif
2020 
2021 # ifndef OPENSSL_NO_TLS1_1_METHOD
2022 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
2023 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_method(void); /* TLSv1.1 */
2024 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_server_method(void);
2025 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_client_method(void);
2026 #  endif
2027 # endif
2028 
2029 # ifndef OPENSSL_NO_TLS1_2_METHOD
2030 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
2031 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_method(void); /* TLSv1.2 */
2032 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_server_method(void);
2033 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_client_method(void);
2034 #  endif
2035 # endif
2036 
2037 # ifndef OPENSSL_NO_DTLS1_METHOD
2038 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
2039 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_method(void); /* DTLSv1.0 */
2040 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_server_method(void);
2041 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_client_method(void);
2042 #  endif
2043 # endif
2044 
2045 # ifndef OPENSSL_NO_DTLS1_2_METHOD
2046 /* DTLSv1.2 */
2047 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
2048 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_method(void);
2049 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_server_method(void);
2050 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_client_method(void);
2051 #  endif
2052 # endif
2053 
2054 __owur const SSL_METHOD *DTLS_method(void); /* DTLS 1.0 and 1.2 */
2055 __owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
2056 __owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
2057 
2058 __owur size_t DTLS_get_data_mtu(const SSL *s);
2059 
2060 __owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
2061 __owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
2062 __owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
2063 __owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
2064 
2065 __owur int SSL_do_handshake(SSL *s);
2066 int SSL_key_update(SSL *s, int updatetype);
2067 int SSL_get_key_update_type(const SSL *s);
2068 int SSL_renegotiate(SSL *s);
2069 int SSL_renegotiate_abbreviated(SSL *s);
2070 __owur int SSL_renegotiate_pending(const SSL *s);
2071 int SSL_new_session_ticket(SSL *s);
2072 int SSL_shutdown(SSL *s);
2073 __owur int SSL_verify_client_post_handshake(SSL *s);
2074 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val);
2075 void SSL_set_post_handshake_auth(SSL *s, int val);
2076 
2077 __owur const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
2078 __owur const SSL_METHOD *SSL_get_ssl_method(const SSL *s);
2079 __owur int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
2080 __owur const char *SSL_alert_type_string_long(int value);
2081 __owur const char *SSL_alert_type_string(int value);
2082 __owur const char *SSL_alert_desc_string_long(int value);
2083 __owur const char *SSL_alert_desc_string(int value);
2084 
2085 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
2086 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
2087 __owur const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
2088 __owur const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
2089 __owur int SSL_add1_to_CA_list(SSL *ssl, const X509 *x);
2090 __owur int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x);
2091 __owur const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
2092 
2093 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
2094 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
2095 __owur STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
2096 __owur STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
2097 __owur int SSL_add_client_CA(SSL *ssl, X509 *x);
2098 __owur int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);
2099 
2100 void SSL_set_connect_state(SSL *s);
2101 void SSL_set_accept_state(SSL *s);
2102 
2103 __owur long SSL_get_default_timeout(const SSL *s);
2104 
2105 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2106 #  define SSL_library_init() OPENSSL_init_ssl(0, NULL)
2107 # endif
2108 
2109 __owur char *SSL_CIPHER_description(const SSL_CIPHER *, char *buf, int size);
2110 __owur STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk);
2111 
2112 __owur SSL *SSL_dup(SSL *ssl);
2113 
2114 __owur X509 *SSL_get_certificate(const SSL *ssl);
2115 /*
2116  * EVP_PKEY
2117  */
2118 struct evp_pkey_st *SSL_get_privatekey(const SSL *ssl);
2119 
2120 __owur X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
2121 __owur EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
2122 
2123 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
2124 __owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
2125 void SSL_set_quiet_shutdown(SSL *ssl, int mode);
2126 __owur int SSL_get_quiet_shutdown(const SSL *ssl);
2127 void SSL_set_shutdown(SSL *ssl, int mode);
2128 __owur int SSL_get_shutdown(const SSL *ssl);
2129 __owur int SSL_version(const SSL *ssl);
2130 __owur int SSL_client_version(const SSL *s);
2131 __owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
2132 __owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
2133 __owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
2134 __owur int SSL_CTX_set_default_verify_store(SSL_CTX *ctx);
2135 __owur int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile);
2136 __owur int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath);
2137 __owur int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore);
2138 __owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
2139                                                         const char *CAfile,
2140                                                         const char *CApath);
2141 # define SSL_get0_session SSL_get_session/* just peek at pointer */
2142 __owur SSL_SESSION *SSL_get_session(const SSL *ssl);
2143 __owur SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
2144 __owur SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
2145 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
2146 void SSL_set_info_callback(SSL *ssl,
2147                            void (*cb) (const SSL *ssl, int type, int val));
2148 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL *ssl, int type,
2149                                                int val);
2150 __owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
2151 
2152 void SSL_set_verify_result(SSL *ssl, long v);
2153 __owur long SSL_get_verify_result(const SSL *ssl);
2154 __owur STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s);
2155 
2156 __owur size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
2157                                     size_t outlen);
2158 __owur size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
2159                                     size_t outlen);
2160 __owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
2161                                          unsigned char *out, size_t outlen);
2162 __owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
2163                                        const unsigned char *in, size_t len);
2164 uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
2165 
2166 #define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
2167     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
2168 __owur int SSL_set_ex_data(SSL *ssl, int idx, void *data);
2169 void *SSL_get_ex_data(const SSL *ssl, int idx);
2170 #define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
2171     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
2172 __owur int SSL_SESSION_set_ex_data(SSL_SESSION *ss, int idx, void *data);
2173 void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss, int idx);
2174 #define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
2175     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
2176 __owur int SSL_CTX_set_ex_data(SSL_CTX *ssl, int idx, void *data);
2177 void *SSL_CTX_get_ex_data(const SSL_CTX *ssl, int idx);
2178 
2179 __owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
2180 
2181 # define SSL_CTX_sess_set_cache_size(ctx,t) \
2182         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
2183 # define SSL_CTX_sess_get_cache_size(ctx) \
2184         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
2185 # define SSL_CTX_set_session_cache_mode(ctx,m) \
2186         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
2187 # define SSL_CTX_get_session_cache_mode(ctx) \
2188         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
2189 
2190 # define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
2191 # define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
2192 # define SSL_CTX_get_read_ahead(ctx) \
2193         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
2194 # define SSL_CTX_set_read_ahead(ctx,m) \
2195         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
2196 # define SSL_CTX_get_max_cert_list(ctx) \
2197         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2198 # define SSL_CTX_set_max_cert_list(ctx,m) \
2199         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2200 # define SSL_get_max_cert_list(ssl) \
2201         SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2202 # define SSL_set_max_cert_list(ssl,m) \
2203         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2204 
2205 # define SSL_CTX_set_max_send_fragment(ctx,m) \
2206         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2207 # define SSL_set_max_send_fragment(ssl,m) \
2208         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2209 # define SSL_CTX_set_split_send_fragment(ctx,m) \
2210         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2211 # define SSL_set_split_send_fragment(ssl,m) \
2212         SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2213 # define SSL_CTX_set_max_pipelines(ctx,m) \
2214         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2215 # define SSL_set_max_pipelines(ssl,m) \
2216         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2217 # define SSL_set_retry_verify(ssl) \
2218         (SSL_ctrl(ssl,SSL_CTRL_SET_RETRY_VERIFY,0,NULL) > 0)
2219 
2220 void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
2221 void SSL_set_default_read_buffer_len(SSL *s, size_t len);
2222 
2223 # ifndef OPENSSL_NO_DH
2224 #  ifndef OPENSSL_NO_DEPRECATED_3_0
2225 /* NB: the |keylength| is only applicable when is_export is true */
2226 OSSL_DEPRECATEDIN_3_0
2227 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
2228                                  DH *(*dh) (SSL *ssl, int is_export,
2229                                             int keylength));
2230 OSSL_DEPRECATEDIN_3_0
2231 void SSL_set_tmp_dh_callback(SSL *ssl,
2232                              DH *(*dh) (SSL *ssl, int is_export,
2233                                         int keylength));
2234 #  endif
2235 # endif
2236 
2237 __owur const COMP_METHOD *SSL_get_current_compression(const SSL *s);
2238 __owur const COMP_METHOD *SSL_get_current_expansion(const SSL *s);
2239 __owur const char *SSL_COMP_get_name(const COMP_METHOD *comp);
2240 __owur const char *SSL_COMP_get0_name(const SSL_COMP *comp);
2241 __owur int SSL_COMP_get_id(const SSL_COMP *comp);
2242 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
2243 __owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
2244                                                              *meths);
2245 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2246 #  define SSL_COMP_free_compression_methods() while(0) continue
2247 # endif
2248 __owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
2249 
2250 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);
2251 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
2252 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
2253 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
2254                              int isv2format, STACK_OF(SSL_CIPHER) **sk,
2255                              STACK_OF(SSL_CIPHER) **scsvs);
2256 
2257 /* TLS extensions functions */
2258 __owur int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);
2259 
2260 __owur int SSL_set_session_ticket_ext_cb(SSL *s,
2261                                          tls_session_ticket_ext_cb_fn cb,
2262                                          void *arg);
2263 
2264 /* Pre-shared secret session resumption functions */
2265 __owur int SSL_set_session_secret_cb(SSL *s,
2266                                      tls_session_secret_cb_fn session_secret_cb,
2267                                      void *arg);
2268 
2269 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
2270                                                 int (*cb) (SSL *ssl,
2271                                                            int
2272                                                            is_forward_secure));
2273 
2274 void SSL_set_not_resumable_session_callback(SSL *ssl,
2275                                             int (*cb) (SSL *ssl,
2276                                                        int is_forward_secure));
2277 
2278 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
2279                                          size_t (*cb) (SSL *ssl, int type,
2280                                                        size_t len, void *arg));
2281 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
2282 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
2283 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
2284 
2285 int SSL_set_record_padding_callback(SSL *ssl,
2286                                     size_t (*cb) (SSL *ssl, int type,
2287                                                   size_t len, void *arg));
2288 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);
2289 void *SSL_get_record_padding_callback_arg(const SSL *ssl);
2290 int SSL_set_block_padding(SSL *ssl, size_t block_size);
2291 
2292 int SSL_set_num_tickets(SSL *s, size_t num_tickets);
2293 size_t SSL_get_num_tickets(const SSL *s);
2294 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
2295 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
2296 
2297 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2298 #  define SSL_cache_hit(s) SSL_session_reused(s)
2299 # endif
2300 
2301 __owur int SSL_session_reused(const SSL *s);
2302 __owur int SSL_is_server(const SSL *s);
2303 
2304 __owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
2305 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
2306 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
2307 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
2308 __owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
2309                                              unsigned int flags);
2310 __owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);
2311 
2312 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
2313 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);
2314 
2315 __owur int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
2316 __owur int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);
2317 __owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd);
2318 
2319 void SSL_add_ssl_module(void);
2320 int SSL_config(SSL *s, const char *name);
2321 int SSL_CTX_config(SSL_CTX *ctx, const char *name);
2322 
2323 # ifndef OPENSSL_NO_SSL_TRACE
2324 void SSL_trace(int write_p, int version, int content_type,
2325                const void *buf, size_t len, SSL *ssl, void *arg);
2326 # endif
2327 
2328 # ifndef OPENSSL_NO_SOCK
2329 int DTLSv1_listen(SSL *s, BIO_ADDR *client);
2330 # endif
2331 
2332 # ifndef OPENSSL_NO_CT
2333 
2334 /*
2335  * A callback for verifying that the received SCTs are sufficient.
2336  * Expected to return 1 if they are sufficient, otherwise 0.
2337  * May return a negative integer if an error occurs.
2338  * A connection should be aborted if the SCTs are deemed insufficient.
2339  */
2340 typedef int (*ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
2341                                     const STACK_OF(SCT) *scts, void *arg);
2342 
2343 /*
2344  * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
2345  * the received SCTs.
2346  * If the callback returns a non-positive result, the connection is terminated.
2347  * Call this function before beginning a handshake.
2348  * If a NULL |callback| is provided, SCT validation is disabled.
2349  * |arg| is arbitrary userdata that will be passed to the callback whenever it
2350  * is invoked. Ownership of |arg| remains with the caller.
2351  *
2352  * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
2353  *       will be requested.
2354  */
2355 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
2356                                    void *arg);
2357 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
2358                                        ssl_ct_validation_cb callback,
2359                                        void *arg);
2360 #define SSL_disable_ct(s) \
2361         ((void) SSL_set_validation_callback((s), NULL, NULL))
2362 #define SSL_CTX_disable_ct(ctx) \
2363         ((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
2364 
2365 /*
2366  * The validation type enumerates the available behaviours of the built-in SSL
2367  * CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
2368  * The underlying callback is a static function in libssl.
2369  */
2370 enum {
2371     SSL_CT_VALIDATION_PERMISSIVE = 0,
2372     SSL_CT_VALIDATION_STRICT
2373 };
2374 
2375 /*
2376  * Enable CT by setting up a callback that implements one of the built-in
2377  * validation variants.  The SSL_CT_VALIDATION_PERMISSIVE variant always
2378  * continues the handshake, the application can make appropriate decisions at
2379  * handshake completion.  The SSL_CT_VALIDATION_STRICT variant requires at
2380  * least one valid SCT, or else handshake termination will be requested.  The
2381  * handshake may continue anyway if SSL_VERIFY_NONE is in effect.
2382  */
2383 int SSL_enable_ct(SSL *s, int validation_mode);
2384 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
2385 
2386 /*
2387  * Report whether a non-NULL callback is enabled.
2388  */
2389 int SSL_ct_is_enabled(const SSL *s);
2390 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
2391 
2392 /* Gets the SCTs received from a connection */
2393 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
2394 
2395 /*
2396  * Loads the CT log list from the default location.
2397  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2398  * the log information loaded from this file will be appended to the
2399  * CTLOG_STORE.
2400  * Returns 1 on success, 0 otherwise.
2401  */
2402 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
2403 
2404 /*
2405  * Loads the CT log list from the specified file path.
2406  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2407  * the log information loaded from this file will be appended to the
2408  * CTLOG_STORE.
2409  * Returns 1 on success, 0 otherwise.
2410  */
2411 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
2412 
2413 /*
2414  * Sets the CT log list used by all SSL connections created from this SSL_CTX.
2415  * Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
2416  */
2417 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs);
2418 
2419 /*
2420  * Gets the CT log list used by all SSL connections created from this SSL_CTX.
2421  * This will be NULL unless one of the following functions has been called:
2422  * - SSL_CTX_set_default_ctlog_list_file
2423  * - SSL_CTX_set_ctlog_list_file
2424  * - SSL_CTX_set_ctlog_store
2425  */
2426 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx);
2427 
2428 # endif /* OPENSSL_NO_CT */
2429 
2430 /* What the "other" parameter contains in security callback */
2431 /* Mask for type */
2432 # define SSL_SECOP_OTHER_TYPE    0xffff0000
2433 # define SSL_SECOP_OTHER_NONE    0
2434 # define SSL_SECOP_OTHER_CIPHER  (1 << 16)
2435 # define SSL_SECOP_OTHER_CURVE   (2 << 16)
2436 # define SSL_SECOP_OTHER_DH      (3 << 16)
2437 # define SSL_SECOP_OTHER_PKEY    (4 << 16)
2438 # define SSL_SECOP_OTHER_SIGALG  (5 << 16)
2439 # define SSL_SECOP_OTHER_CERT    (6 << 16)
2440 
2441 /* Indicated operation refers to peer key or certificate */
2442 # define SSL_SECOP_PEER          0x1000
2443 
2444 /* Values for "op" parameter in security callback */
2445 
2446 /* Called to filter ciphers */
2447 /* Ciphers client supports */
2448 # define SSL_SECOP_CIPHER_SUPPORTED      (1 | SSL_SECOP_OTHER_CIPHER)
2449 /* Cipher shared by client/server */
2450 # define SSL_SECOP_CIPHER_SHARED         (2 | SSL_SECOP_OTHER_CIPHER)
2451 /* Sanity check of cipher server selects */
2452 # define SSL_SECOP_CIPHER_CHECK          (3 | SSL_SECOP_OTHER_CIPHER)
2453 /* Curves supported by client */
2454 # define SSL_SECOP_CURVE_SUPPORTED       (4 | SSL_SECOP_OTHER_CURVE)
2455 /* Curves shared by client/server */
2456 # define SSL_SECOP_CURVE_SHARED          (5 | SSL_SECOP_OTHER_CURVE)
2457 /* Sanity check of curve server selects */
2458 # define SSL_SECOP_CURVE_CHECK           (6 | SSL_SECOP_OTHER_CURVE)
2459 /* Temporary DH key */
2460 # define SSL_SECOP_TMP_DH                (7 | SSL_SECOP_OTHER_PKEY)
2461 /* SSL/TLS version */
2462 # define SSL_SECOP_VERSION               (9 | SSL_SECOP_OTHER_NONE)
2463 /* Session tickets */
2464 # define SSL_SECOP_TICKET                (10 | SSL_SECOP_OTHER_NONE)
2465 /* Supported signature algorithms sent to peer */
2466 # define SSL_SECOP_SIGALG_SUPPORTED      (11 | SSL_SECOP_OTHER_SIGALG)
2467 /* Shared signature algorithm */
2468 # define SSL_SECOP_SIGALG_SHARED         (12 | SSL_SECOP_OTHER_SIGALG)
2469 /* Sanity check signature algorithm allowed */
2470 # define SSL_SECOP_SIGALG_CHECK          (13 | SSL_SECOP_OTHER_SIGALG)
2471 /* Used to get mask of supported public key signature algorithms */
2472 # define SSL_SECOP_SIGALG_MASK           (14 | SSL_SECOP_OTHER_SIGALG)
2473 /* Use to see if compression is allowed */
2474 # define SSL_SECOP_COMPRESSION           (15 | SSL_SECOP_OTHER_NONE)
2475 /* EE key in certificate */
2476 # define SSL_SECOP_EE_KEY                (16 | SSL_SECOP_OTHER_CERT)
2477 /* CA key in certificate */
2478 # define SSL_SECOP_CA_KEY                (17 | SSL_SECOP_OTHER_CERT)
2479 /* CA digest algorithm in certificate */
2480 # define SSL_SECOP_CA_MD                 (18 | SSL_SECOP_OTHER_CERT)
2481 /* Peer EE key in certificate */
2482 # define SSL_SECOP_PEER_EE_KEY           (SSL_SECOP_EE_KEY | SSL_SECOP_PEER)
2483 /* Peer CA key in certificate */
2484 # define SSL_SECOP_PEER_CA_KEY           (SSL_SECOP_CA_KEY | SSL_SECOP_PEER)
2485 /* Peer CA digest algorithm in certificate */
2486 # define SSL_SECOP_PEER_CA_MD            (SSL_SECOP_CA_MD | SSL_SECOP_PEER)
2487 
2488 void SSL_set_security_level(SSL *s, int level);
2489 __owur int SSL_get_security_level(const SSL *s);
2490 void SSL_set_security_callback(SSL *s,
2491                                int (*cb) (const SSL *s, const SSL_CTX *ctx,
2492                                           int op, int bits, int nid,
2493                                           void *other, void *ex));
2494 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
2495                                                 const SSL_CTX *ctx, int op,
2496                                                 int bits, int nid, void *other,
2497                                                 void *ex);
2498 void SSL_set0_security_ex_data(SSL *s, void *ex);
2499 __owur void *SSL_get0_security_ex_data(const SSL *s);
2500 
2501 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
2502 __owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
2503 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
2504                                    int (*cb) (const SSL *s, const SSL_CTX *ctx,
2505                                               int op, int bits, int nid,
2506                                               void *other, void *ex));
2507 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
2508                                                           const SSL_CTX *ctx,
2509                                                           int op, int bits,
2510                                                           int nid,
2511                                                           void *other,
2512                                                           void *ex);
2513 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex);
2514 __owur void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx);
2515 
2516 /* OPENSSL_INIT flag 0x010000 reserved for internal use */
2517 # define OPENSSL_INIT_NO_LOAD_SSL_STRINGS    0x00100000L
2518 # define OPENSSL_INIT_LOAD_SSL_STRINGS       0x00200000L
2519 
2520 # define OPENSSL_INIT_SSL_DEFAULT \
2521         (OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
2522 
2523 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
2524 
2525 # ifndef OPENSSL_NO_UNIT_TEST
2526 __owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
2527 # endif
2528 
2529 __owur int SSL_free_buffers(SSL *ssl);
2530 __owur int SSL_alloc_buffers(SSL *ssl);
2531 
2532 /* Status codes passed to the decrypt session ticket callback. Some of these
2533  * are for internal use only and are never passed to the callback. */
2534 typedef int SSL_TICKET_STATUS;
2535 
2536 /* Support for ticket appdata */
2537 /* fatal error, malloc failure */
2538 # define SSL_TICKET_FATAL_ERR_MALLOC 0
2539 /* fatal error, either from parsing or decrypting the ticket */
2540 # define SSL_TICKET_FATAL_ERR_OTHER  1
2541 /* No ticket present */
2542 # define SSL_TICKET_NONE             2
2543 /* Empty ticket present */
2544 # define SSL_TICKET_EMPTY            3
2545 /* the ticket couldn't be decrypted */
2546 # define SSL_TICKET_NO_DECRYPT       4
2547 /* a ticket was successfully decrypted */
2548 # define SSL_TICKET_SUCCESS          5
2549 /* same as above but the ticket needs to be renewed */
2550 # define SSL_TICKET_SUCCESS_RENEW    6
2551 
2552 /* Return codes for the decrypt session ticket callback */
2553 typedef int SSL_TICKET_RETURN;
2554 
2555 /* An error occurred */
2556 #define SSL_TICKET_RETURN_ABORT             0
2557 /* Do not use the ticket, do not send a renewed ticket to the client */
2558 #define SSL_TICKET_RETURN_IGNORE            1
2559 /* Do not use the ticket, send a renewed ticket to the client */
2560 #define SSL_TICKET_RETURN_IGNORE_RENEW      2
2561 /* Use the ticket, do not send a renewed ticket to the client */
2562 #define SSL_TICKET_RETURN_USE               3
2563 /* Use the ticket, send a renewed ticket to the client */
2564 #define SSL_TICKET_RETURN_USE_RENEW         4
2565 
2566 typedef int (*SSL_CTX_generate_session_ticket_fn)(SSL *s, void *arg);
2567 typedef SSL_TICKET_RETURN (*SSL_CTX_decrypt_session_ticket_fn)(SSL *s, SSL_SESSION *ss,
2568                                                                const unsigned char *keyname,
2569                                                                size_t keyname_length,
2570                                                                SSL_TICKET_STATUS status,
2571                                                                void *arg);
2572 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
2573                                   SSL_CTX_generate_session_ticket_fn gen_cb,
2574                                   SSL_CTX_decrypt_session_ticket_fn dec_cb,
2575                                   void *arg);
2576 int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len);
2577 int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len);
2578 
2579 typedef unsigned int (*DTLS_timer_cb)(SSL *s, unsigned int timer_us);
2580 
2581 void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
2582 
2583 
2584 typedef int (*SSL_allow_early_data_cb_fn)(SSL *s, void *arg);
2585 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
2586                                      SSL_allow_early_data_cb_fn cb,
2587                                      void *arg);
2588 void SSL_set_allow_early_data_cb(SSL *s,
2589                                  SSL_allow_early_data_cb_fn cb,
2590                                  void *arg);
2591 
2592 /* store the default cipher strings inside the library */
2593 const char *OSSL_default_cipher_list(void);
2594 const char *OSSL_default_ciphersuites(void);
2595 
2596 # ifdef  __cplusplus
2597 }
2598 # endif
2599 #endif
2600