include/openssl/ssl.h.in

   1 /*
   2  * {- join("\n * ", @autowarntext) -}
   3  *
   4  * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
   5  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
   6  * Copyright 2005 Nokia. All rights reserved.
   7  *
   8  * Licensed under the Apache License 2.0 (the "License").  You may not use
   9  * this file except in compliance with the License.  You can obtain a copy
  10  * in the file LICENSE in the source distribution or at
  11  * https://www.openssl.org/source/license.html
  12  */
  13
  14 {-
  15 use OpenSSL::stackhash qw(generate_stack_macros generate_const_stack_macros);
  16 -}
  17
  18 #ifndef OPENSSL_SSL_H
  19 # define OPENSSL_SSL_H
  20 # pragma once
  21
  22 # include <openssl/macros.h>
  23 # ifndef OPENSSL_NO_DEPRECATED_3_0
  24 #  define HEADER_SSL_H
  25 # endif
  26
  27 # include <openssl/e_os2.h>
  28 # include <openssl/opensslconf.h>
  29 # include <openssl/comp.h>
  30 # include <openssl/bio.h>
  31 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
  32 #  include <openssl/x509.h>
  33 #  include <openssl/crypto.h>
  34 #  include <openssl/buffer.h>
  35 # endif
  36 # include <openssl/lhash.h>
  37 # include <openssl/pem.h>
  38 # include <openssl/hmac.h>
  39 # include <openssl/async.h>
  40
  41 # include <openssl/safestack.h>
  42 # include <openssl/symhacks.h>
  43 # include <openssl/ct.h>
  44 # include <openssl/sslerr.h>
  45 # include <openssl/prov_ssl.h>
  46 # ifndef OPENSSL_NO_STDIO
  47 #  include <stdio.h>
  48 # endif
  49
  50 #ifdef  __cplusplus
  51 extern "C" {
  52 #endif
  53
  54 /* OpenSSL version number for ASN.1 encoding of the session information */
  55 /*-
  56  * Version 0 - initial version
  57  * Version 1 - added the optional peer certificate
  58  */
  59 # define SSL_SESSION_ASN1_VERSION 0x0001
  60
  61 # define SSL_MAX_SSL_SESSION_ID_LENGTH           32
  62 # define SSL_MAX_SID_CTX_LENGTH                  32
  63
  64 # define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES     (512/8)
  65 # define SSL_MAX_KEY_ARG_LENGTH                  8
  66 /* SSL_MAX_MASTER_KEY_LENGTH is defined in prov_ssl.h */
  67
  68 /* The maximum number of encrypt/decrypt pipelines we can support */
  69 # define SSL_MAX_PIPELINES  32
  70
  71 /* text strings for the ciphers */
  72
  73 /* These are used to specify which ciphers to use and not to use */
  74
  75 # define SSL_TXT_LOW             "LOW"
  76 # define SSL_TXT_MEDIUM          "MEDIUM"
  77 # define SSL_TXT_HIGH            "HIGH"
  78 # define SSL_TXT_FIPS            "FIPS"
  79
  80 # define SSL_TXT_aNULL           "aNULL"
  81 # define SSL_TXT_eNULL           "eNULL"
  82 # define SSL_TXT_NULL            "NULL"
  83
  84 # define SSL_TXT_kRSA            "kRSA"
  85 # define SSL_TXT_kDHr            "kDHr"/* this cipher class has been removed */
  86 # define SSL_TXT_kDHd            "kDHd"/* this cipher class has been removed */
  87 # define SSL_TXT_kDH             "kDH"/* this cipher class has been removed */
  88 # define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
  89 # define SSL_TXT_kDHE            "kDHE"
  90 # define SSL_TXT_kECDHr          "kECDHr"/* this cipher class has been removed */
  91 # define SSL_TXT_kECDHe          "kECDHe"/* this cipher class has been removed */
  92 # define SSL_TXT_kECDH           "kECDH"/* this cipher class has been removed */
  93 # define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
  94 # define SSL_TXT_kECDHE          "kECDHE"
  95 # define SSL_TXT_kPSK            "kPSK"
  96 # define SSL_TXT_kRSAPSK         "kRSAPSK"
  97 # define SSL_TXT_kECDHEPSK       "kECDHEPSK"
  98 # define SSL_TXT_kDHEPSK         "kDHEPSK"
  99 # define SSL_TXT_kGOST           "kGOST"
 100 # define SSL_TXT_kGOST18         "kGOST18"
 101 # define SSL_TXT_kSRP            "kSRP"
 102
 103 # define SSL_TXT_aRSA            "aRSA"
 104 # define SSL_TXT_aDSS            "aDSS"
 105 # define SSL_TXT_aDH             "aDH"/* this cipher class has been removed */
 106 # define SSL_TXT_aECDH           "aECDH"/* this cipher class has been removed */
 107 # define SSL_TXT_aECDSA          "aECDSA"
 108 # define SSL_TXT_aPSK            "aPSK"
 109 # define SSL_TXT_aGOST94         "aGOST94"
 110 # define SSL_TXT_aGOST01         "aGOST01"
 111 # define SSL_TXT_aGOST12         "aGOST12"
 112 # define SSL_TXT_aGOST           "aGOST"
 113 # define SSL_TXT_aSRP            "aSRP"
 114
 115 # define SSL_TXT_DSS             "DSS"
 116 # define SSL_TXT_DH              "DH"
 117 # define SSL_TXT_DHE             "DHE"/* same as "kDHE:-ADH" */
 118 # define SSL_TXT_EDH             "EDH"/* alias for DHE */
 119 # define SSL_TXT_ADH             "ADH"
 120 # define SSL_TXT_RSA             "RSA"
 121 # define SSL_TXT_ECDH            "ECDH"
 122 # define SSL_TXT_EECDH           "EECDH"/* alias for ECDHE" */
 123 # define SSL_TXT_ECDHE           "ECDHE"/* same as "kECDHE:-AECDH" */
 124 # define SSL_TXT_AECDH           "AECDH"
 125 # define SSL_TXT_ECDSA           "ECDSA"
 126 # define SSL_TXT_PSK             "PSK"
 127 # define SSL_TXT_SRP             "SRP"
 128
 129 # define SSL_TXT_DES             "DES"
 130 # define SSL_TXT_3DES            "3DES"
 131 # define SSL_TXT_RC4             "RC4"
 132 # define SSL_TXT_RC2             "RC2"
 133 # define SSL_TXT_IDEA            "IDEA"
 134 # define SSL_TXT_SEED            "SEED"
 135 # define SSL_TXT_AES128          "AES128"
 136 # define SSL_TXT_AES256          "AES256"
 137 # define SSL_TXT_AES             "AES"
 138 # define SSL_TXT_AES_GCM         "AESGCM"
 139 # define SSL_TXT_AES_CCM         "AESCCM"
 140 # define SSL_TXT_AES_CCM_8       "AESCCM8"
 141 # define SSL_TXT_CAMELLIA128     "CAMELLIA128"
 142 # define SSL_TXT_CAMELLIA256     "CAMELLIA256"
 143 # define SSL_TXT_CAMELLIA        "CAMELLIA"
 144 # define SSL_TXT_CHACHA20        "CHACHA20"
 145 # define SSL_TXT_GOST            "GOST89"
 146 # define SSL_TXT_ARIA            "ARIA"
 147 # define SSL_TXT_ARIA_GCM        "ARIAGCM"
 148 # define SSL_TXT_ARIA128         "ARIA128"
 149 # define SSL_TXT_ARIA256         "ARIA256"
 150 # define SSL_TXT_GOST2012_GOST8912_GOST8912 "GOST2012-GOST8912-GOST8912"
 151 # define SSL_TXT_CBC             "CBC"
 152
 153 # define SSL_TXT_MD5             "MD5"
 154 # define SSL_TXT_SHA1            "SHA1"
 155 # define SSL_TXT_SHA             "SHA"/* same as "SHA1" */
 156 # define SSL_TXT_GOST94          "GOST94"
 157 # define SSL_TXT_GOST89MAC       "GOST89MAC"
 158 # define SSL_TXT_GOST12          "GOST12"
 159 # define SSL_TXT_GOST89MAC12     "GOST89MAC12"
 160 # define SSL_TXT_SHA256          "SHA256"
 161 # define SSL_TXT_SHA384          "SHA384"
 162
 163 # define SSL_TXT_SSLV3           "SSLv3"
 164 # define SSL_TXT_TLSV1           "TLSv1"
 165 # define SSL_TXT_TLSV1_1         "TLSv1.1"
 166 # define SSL_TXT_TLSV1_2         "TLSv1.2"
 167
 168 # define SSL_TXT_ALL             "ALL"
 169
 170 /*-
 171  * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
 172  * ciphers normally not being used.
 173  * Example: "RC4" will activate all ciphers using RC4 including ciphers
 174  * without authentication, which would normally disabled by DEFAULT (due
 175  * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
 176  * will make sure that it is also disabled in the specific selection.
 177  * COMPLEMENTOF* identifiers are portable between version, as adjustments
 178  * to the default cipher setup will also be included here.
 179  *
 180  * COMPLEMENTOFDEFAULT does not experience the same special treatment that
 181  * DEFAULT gets, as only selection is being done and no sorting as needed
 182  * for DEFAULT.
 183  */
 184 # define SSL_TXT_CMPALL          "COMPLEMENTOFALL"
 185 # define SSL_TXT_CMPDEF          "COMPLEMENTOFDEFAULT"
 186
 187 /*
 188  * The following cipher list is used by default. It also is substituted when
 189  * an application-defined cipher list string starts with 'DEFAULT'.
 190  * This applies to ciphersuites for TLSv1.2 and below.
 191  * DEPRECATED IN 3.0.0, in favor of OSSL_default_cipher_list()
 192  * Update both macro and function simultaneously
 193  */
 194 # ifndef OPENSSL_NO_DEPRECATED_3_0
 195 #  define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
 196 /*
 197  * This is the default set of TLSv1.3 ciphersuites
 198  * DEPRECATED IN 3.0.0, in favor of OSSL_default_ciphersuites()
 199  * Update both macro and function simultaneously
 200  */
 201 #  define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
 202                                    "TLS_CHACHA20_POLY1305_SHA256:" \
 203                                    "TLS_AES_128_GCM_SHA256"
 204 # endif
 205 /*
 206  * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
 207  * starts with a reasonable order, and all we have to do for DEFAULT is
 208  * throwing out anonymous and unencrypted ciphersuites! (The latter are not
 209  * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
 210  */
 211
 212 /* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
 213 # define SSL_SENT_SHUTDOWN       1
 214 # define SSL_RECEIVED_SHUTDOWN   2
 215
 216 #ifdef __cplusplus
 217 }
 218 #endif
 219
 220 #ifdef  __cplusplus
 221 extern "C" {
 222 #endif
 223
 224 # define SSL_FILETYPE_ASN1       X509_FILETYPE_ASN1
 225 # define SSL_FILETYPE_PEM        X509_FILETYPE_PEM
 226
 227 /*
 228  * This is needed to stop compilers complaining about the 'struct ssl_st *'
 229  * function parameters used to prototype callbacks in SSL_CTX.
 230  */
 231 typedef struct ssl_st *ssl_crock_st;
 232 typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
 233 typedef struct ssl_method_st SSL_METHOD;
 234 typedef struct ssl_cipher_st SSL_CIPHER;
 235 typedef struct ssl_session_st SSL_SESSION;
 236 typedef struct tls_sigalgs_st TLS_SIGALGS;
 237 typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
 238 typedef struct ssl_comp_st SSL_COMP;
 239
 240 STACK_OF(SSL_CIPHER);
 241 STACK_OF(SSL_COMP);
 242
 243 /* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
 244 typedef struct srtp_protection_profile_st {
 245     const char *name;
 246     unsigned long id;
 247 } SRTP_PROTECTION_PROFILE;
 248 {-
 249     generate_stack_macros("SRTP_PROTECTION_PROFILE");
 250 -}
 251
 252
 253 typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data,
 254                                             int len, void *arg);
 255 typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len,
 256                                         STACK_OF(SSL_CIPHER) *peer_ciphers,
 257                                         const SSL_CIPHER **cipher, void *arg);
 258
 259 /* Extension context codes */
 260 /* This extension is only allowed in TLS */
 261 #define SSL_EXT_TLS_ONLY                        0x0001
 262 /* This extension is only allowed in DTLS */
 263 #define SSL_EXT_DTLS_ONLY                       0x0002
 264 /* Some extensions may be allowed in DTLS but we don't implement them for it */
 265 #define SSL_EXT_TLS_IMPLEMENTATION_ONLY         0x0004
 266 /* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
 267 #define SSL_EXT_SSL3_ALLOWED                    0x0008
 268 /* Extension is only defined for TLS1.2 and below */
 269 #define SSL_EXT_TLS1_2_AND_BELOW_ONLY           0x0010
 270 /* Extension is only defined for TLS1.3 and above */
 271 #define SSL_EXT_TLS1_3_ONLY                     0x0020
 272 /* Ignore this extension during parsing if we are resuming */
 273 #define SSL_EXT_IGNORE_ON_RESUMPTION            0x0040
 274 #define SSL_EXT_CLIENT_HELLO                    0x0080
 275 /* Really means TLS1.2 or below */
 276 #define SSL_EXT_TLS1_2_SERVER_HELLO             0x0100
 277 #define SSL_EXT_TLS1_3_SERVER_HELLO             0x0200
 278 #define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS     0x0400
 279 #define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST      0x0800
 280 #define SSL_EXT_TLS1_3_CERTIFICATE              0x1000
 281 #define SSL_EXT_TLS1_3_NEW_SESSION_TICKET       0x2000
 282 #define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST      0x4000
 283
 284 /* Typedefs for handling custom extensions */
 285
 286 typedef int (*custom_ext_add_cb)(SSL *s, unsigned int ext_type,
 287                                  const unsigned char **out, size_t *outlen,
 288                                  int *al, void *add_arg);
 289
 290 typedef void (*custom_ext_free_cb)(SSL *s, unsigned int ext_type,
 291                                    const unsigned char *out, void *add_arg);
 292
 293 typedef int (*custom_ext_parse_cb)(SSL *s, unsigned int ext_type,
 294                                    const unsigned char *in, size_t inlen,
 295                                    int *al, void *parse_arg);
 296
 297
 298 typedef int (*SSL_custom_ext_add_cb_ex)(SSL *s, unsigned int ext_type,
 299                                         unsigned int context,
 300                                         const unsigned char **out,
 301                                         size_t *outlen, X509 *x,
 302                                         size_t chainidx,
 303                                         int *al, void *add_arg);
 304
 305 typedef void (*SSL_custom_ext_free_cb_ex)(SSL *s, unsigned int ext_type,
 306                                           unsigned int context,
 307                                           const unsigned char *out,
 308                                           void *add_arg);
 309
 310 typedef int (*SSL_custom_ext_parse_cb_ex)(SSL *s, unsigned int ext_type,
 311                                           unsigned int context,
 312                                           const unsigned char *in,
 313                                           size_t inlen, X509 *x,
 314                                           size_t chainidx,
 315                                           int *al, void *parse_arg);
 316
 317 /* Typedef for verification callback */
 318 typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
 319
 320 /* Typedef for SSL async callback */
 321 typedef int (*SSL_async_callback_fn)(SSL *s, void *arg);
 322
 323 #define SSL_OP_BIT(n)  ((uint64_t)1 << (uint64_t)n)
 324
 325 /*
 326  * SSL/TLS connection options.
 327  */
 328     /* Disable Extended master secret */
 329 # define SSL_OP_NO_EXTENDED_MASTER_SECRET                SSL_OP_BIT(0)
 330     /* Cleanse plaintext copies of data delivered to the application */
 331 # define SSL_OP_CLEANSE_PLAINTEXT                        SSL_OP_BIT(1)
 332     /* Allow initial connection to servers that don't support RI */
 333 # define SSL_OP_LEGACY_SERVER_CONNECT                    SSL_OP_BIT(2)
 334     /* Enable support for Kernel TLS */
 335 # define SSL_OP_ENABLE_KTLS                              SSL_OP_BIT(3)
 336 # define SSL_OP_TLSEXT_PADDING                           SSL_OP_BIT(4)
 337 # define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   SSL_OP_BIT(6)
 338 # define SSL_OP_IGNORE_UNEXPECTED_EOF                    SSL_OP_BIT(7)
 339 # define SSL_OP_ALLOW_CLIENT_RENEGOTIATION               SSL_OP_BIT(8)
 340 # define SSL_OP_DISABLE_TLSEXT_CA_NAMES                  SSL_OP_BIT(9)
 341     /* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
 342 # define SSL_OP_ALLOW_NO_DHE_KEX                         SSL_OP_BIT(10)
 343     /*
 344      * Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
 345      * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)
 346      * the workaround is not needed.  Unfortunately some broken SSL/TLS
 347      * implementations cannot handle it at all, which is why we include it
 348      * in SSL_OP_ALL. Added in 0.9.6e
 349      */
 350 # define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              SSL_OP_BIT(11)
 351     /* DTLS options */
 352 # define SSL_OP_NO_QUERY_MTU                             SSL_OP_BIT(12)
 353     /* Turn on Cookie Exchange (on relevant for servers) */
 354 # define SSL_OP_COOKIE_EXCHANGE                          SSL_OP_BIT(13)
 355     /* Don't use RFC4507 ticket extension */
 356 # define SSL_OP_NO_TICKET                                SSL_OP_BIT(14)
 357 # ifndef OPENSSL_NO_DTLS1_METHOD
 358     /*
 359      * Use Cisco's version identifier of DTLS_BAD_VER
 360      * (only with deprecated DTLSv1_client_method())
 361      */
 362 #  define SSL_OP_CISCO_ANYCONNECT                        SSL_OP_BIT(15)
 363 # endif
 364     /* As server, disallow session resumption on renegotiation */
 365 # define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   SSL_OP_BIT(16)
 366     /* Don't use compression even if supported */
 367 # define SSL_OP_NO_COMPRESSION                           SSL_OP_BIT(17)
 368     /* Permit unsafe legacy renegotiation */
 369 # define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        SSL_OP_BIT(18)
 370     /* Disable encrypt-then-mac */
 371 # define SSL_OP_NO_ENCRYPT_THEN_MAC                      SSL_OP_BIT(19)
 372     /*
 373      * Enable TLSv1.3 Compatibility mode. This is on by default. A future
 374      * version of OpenSSL may have this disabled by default.
 375      */
 376 # define SSL_OP_ENABLE_MIDDLEBOX_COMPAT                  SSL_OP_BIT(20)
 377     /*
 378      * Prioritize Chacha20Poly1305 when client does.
 379      * Modifies SSL_OP_CIPHER_SERVER_PREFERENCE
 380      */
 381 # define SSL_OP_PRIORITIZE_CHACHA                        SSL_OP_BIT(21)
 382     /*
 383      * Set on servers to choose the cipher according to server's preferences.
 384      */
 385 # define SSL_OP_CIPHER_SERVER_PREFERENCE                 SSL_OP_BIT(22)
 386     /*
 387      * If set, a server will allow a client to issue a SSLv3.0 version
 388      * number as latest version supported in the premaster secret, even when
 389      * TLSv1.0 (version 3.1) was announced in the client hello. Normally
 390      * this is forbidden to prevent version rollback attacks.
 391      */
 392 # define SSL_OP_TLS_ROLLBACK_BUG                         SSL_OP_BIT(23)
 393     /*
 394      * Switches off automatic TLSv1.3 anti-replay protection for early data.
 395      * This is a server-side option only (no effect on the client).
 396      */
 397 # define SSL_OP_NO_ANTI_REPLAY                           SSL_OP_BIT(24)
 398 # define SSL_OP_NO_SSLv3                                 SSL_OP_BIT(25)
 399 # define SSL_OP_NO_TLSv1                                 SSL_OP_BIT(26)
 400 # define SSL_OP_NO_TLSv1_2                               SSL_OP_BIT(27)
 401 # define SSL_OP_NO_TLSv1_1                               SSL_OP_BIT(28)
 402 # define SSL_OP_NO_TLSv1_3                               SSL_OP_BIT(29)
 403 # define SSL_OP_NO_DTLSv1                                SSL_OP_BIT(26)
 404 # define SSL_OP_NO_DTLSv1_2                              SSL_OP_BIT(27)
 405     /* Disallow all renegotiation */
 406 # define SSL_OP_NO_RENEGOTIATION                         SSL_OP_BIT(30)
 407     /*
 408      * Make server add server-hello extension from early version of
 409      * cryptopro draft, when GOST ciphersuite is negotiated. Required for
 410      * interoperability with CryptoPro CSP 3.x
 411      */
 412 # define SSL_OP_CRYPTOPRO_TLSEXT_BUG                     SSL_OP_BIT(31)
 413 /*
 414  * Disable RFC8879 certificate compression
 415  * SSL_OP_NO_TX_CERTIFICATE_COMPRESSION: don't send compressed certificates,
 416  *     and ignore the extension when received.
 417  * SSL_OP_NO_RX_CERTIFICATE_COMPRESSION: don't send the extension, and
 418  *     subsequently indicating that receiving is not supported
 419  */
 420 # define SSL_OP_NO_TX_CERTIFICATE_COMPRESSION            SSL_OP_BIT(32)
 421 # define SSL_OP_NO_RX_CERTIFICATE_COMPRESSION            SSL_OP_BIT(33)
 422
 423 /*
 424  * Option "collections."
 425  */
 426 # define SSL_OP_NO_SSL_MASK \
 427         ( SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1 \
 428           | SSL_OP_NO_TLSv1_2 | SSL_OP_NO_TLSv1_3 )
 429 # define SSL_OP_NO_DTLS_MASK \
 430         ( SSL_OP_NO_DTLSv1 | SSL_OP_NO_DTLSv1_2 )
 431
 432 /* Various bug workarounds that should be rather harmless. */
 433 # define SSL_OP_ALL \
 434         ( SSL_OP_CRYPTOPRO_TLSEXT_BUG | SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS \
 435           | SSL_OP_TLSEXT_PADDING | SSL_OP_SAFARI_ECDHE_ECDSA_BUG )
 436
 437 /*
 438  * OBSOLETE OPTIONS retained for compatibility
 439  */
 440
 441 # define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x0
 442 # define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x0
 443 # define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x0
 444 # define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG              0x0
 445 # define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x0
 446 # define SSL_OP_MSIE_SSLV2_RSA_PADDING                   0x0
 447 # define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x0
 448 # define SSL_OP_TLS_D5_BUG                               0x0
 449 # define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x0
 450 # define SSL_OP_SINGLE_ECDH_USE                          0x0
 451 # define SSL_OP_SINGLE_DH_USE                            0x0
 452 # define SSL_OP_EPHEMERAL_RSA                            0x0
 453 # define SSL_OP_NO_SSLv2                                 0x0
 454 # define SSL_OP_PKCS1_CHECK_1                            0x0
 455 # define SSL_OP_PKCS1_CHECK_2                            0x0
 456 # define SSL_OP_NETSCAPE_CA_DN_BUG                       0x0
 457 # define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x0
 458
 459 /*
 460  * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
 461  * when just a single record has been written):
 462  */
 463 # define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001U
 464 /*
 465  * Make it possible to retry SSL_write() with changed buffer location (buffer
 466  * contents must stay the same!); this is not the default to avoid the
 467  * misconception that non-blocking SSL_write() behaves like non-blocking
 468  * write():
 469  */
 470 # define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
 471 /*
 472  * Never bother the application with retries if the transport is blocking:
 473  */
 474 # define SSL_MODE_AUTO_RETRY 0x00000004U
 475 /* Don't attempt to automatically build certificate chain */
 476 # define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
 477 /*
 478  * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
 479  * TLS only.) Released buffers are freed.
 480  */
 481 # define SSL_MODE_RELEASE_BUFFERS 0x00000010U
 482 /*
 483  * Send the current time in the Random fields of the ClientHello and
 484  * ServerHello records for compatibility with hypothetical implementations
 485  * that require it.
 486  */
 487 # define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
 488 # define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
 489 /*
 490  * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
 491  * that reconnect with a downgraded protocol version; see
 492  * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
 493  * application attempts a normal handshake. Only use this in explicit
 494  * fallback retries, following the guidance in
 495  * draft-ietf-tls-downgrade-scsv-00.
 496  */
 497 # define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
 498 /*
 499  * Support Asynchronous operation
 500  */
 501 # define SSL_MODE_ASYNC 0x00000100U
 502
 503 /*
 504  * When using DTLS/SCTP, include the terminating zero in the label
 505  * used for computing the endpoint-pair shared secret. Required for
 506  * interoperability with implementations having this bug like these
 507  * older version of OpenSSL:
 508  * - OpenSSL 1.0.0 series
 509  * - OpenSSL 1.0.1 series
 510  * - OpenSSL 1.0.2 series
 511  * - OpenSSL 1.1.0 series
 512  * - OpenSSL 1.1.1 and 1.1.1a
 513  */
 514 # define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
 515
 516 /* Cert related flags */
 517 /*
 518  * Many implementations ignore some aspects of the TLS standards such as
 519  * enforcing certificate chain algorithms. When this is set we enforce them.
 520  */
 521 # define SSL_CERT_FLAG_TLS_STRICT                0x00000001U
 522
 523 /* Suite B modes, takes same values as certificate verify flags */
 524 # define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY       0x10000
 525 /* Suite B 192 bit only mode */
 526 # define SSL_CERT_FLAG_SUITEB_192_LOS            0x20000
 527 /* Suite B 128 bit mode allowing 192 bit algorithms */
 528 # define SSL_CERT_FLAG_SUITEB_128_LOS            0x30000
 529
 530 /* Perform all sorts of protocol violations for testing purposes */
 531 # define SSL_CERT_FLAG_BROKEN_PROTOCOL           0x10000000
 532
 533 /* Flags for building certificate chains */
 534 /* Treat any existing certificates as untrusted CAs */
 535 # define SSL_BUILD_CHAIN_FLAG_UNTRUSTED          0x1
 536 /* Don't include root CA in chain */
 537 # define SSL_BUILD_CHAIN_FLAG_NO_ROOT            0x2
 538 /* Just check certificates already there */
 539 # define SSL_BUILD_CHAIN_FLAG_CHECK              0x4
 540 /* Ignore verification errors */
 541 # define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR       0x8
 542 /* Clear verification errors from queue */
 543 # define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR        0x10
 544
 545 /* Flags returned by SSL_check_chain */
 546 /* Certificate can be used with this session */
 547 # define CERT_PKEY_VALID         0x1
 548 /* Certificate can also be used for signing */
 549 # define CERT_PKEY_SIGN          0x2
 550 /* EE certificate signing algorithm OK */
 551 # define CERT_PKEY_EE_SIGNATURE  0x10
 552 /* CA signature algorithms OK */
 553 # define CERT_PKEY_CA_SIGNATURE  0x20
 554 /* EE certificate parameters OK */
 555 # define CERT_PKEY_EE_PARAM      0x40
 556 /* CA certificate parameters OK */
 557 # define CERT_PKEY_CA_PARAM      0x80
 558 /* Signing explicitly allowed as opposed to SHA1 fallback */
 559 # define CERT_PKEY_EXPLICIT_SIGN 0x100
 560 /* Client CA issuer names match (always set for server cert) */
 561 # define CERT_PKEY_ISSUER_NAME   0x200
 562 /* Cert type matches client types (always set for server cert) */
 563 # define CERT_PKEY_CERT_TYPE     0x400
 564 /* Cert chain suitable to Suite B */
 565 # define CERT_PKEY_SUITEB        0x800
 566
 567 # define SSL_CONF_FLAG_CMDLINE           0x1
 568 # define SSL_CONF_FLAG_FILE              0x2
 569 # define SSL_CONF_FLAG_CLIENT            0x4
 570 # define SSL_CONF_FLAG_SERVER            0x8
 571 # define SSL_CONF_FLAG_SHOW_ERRORS       0x10
 572 # define SSL_CONF_FLAG_CERTIFICATE       0x20
 573 # define SSL_CONF_FLAG_REQUIRE_PRIVATE   0x40
 574 /* Configuration value types */
 575 # define SSL_CONF_TYPE_UNKNOWN           0x0
 576 # define SSL_CONF_TYPE_STRING            0x1
 577 # define SSL_CONF_TYPE_FILE              0x2
 578 # define SSL_CONF_TYPE_DIR               0x3
 579 # define SSL_CONF_TYPE_NONE              0x4
 580 # define SSL_CONF_TYPE_STORE             0x5
 581
 582 /* Maximum length of the application-controlled segment of a a TLSv1.3 cookie */
 583 # define SSL_COOKIE_LENGTH                       4096
 584
 585 /*
 586  * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
 587  * cannot be used to clear bits.
 588  */
 589
 590 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx);
 591 uint64_t SSL_get_options(const SSL *s);
 592 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op);
 593 uint64_t SSL_clear_options(SSL *s, uint64_t op);
 594 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op);
 595 uint64_t SSL_set_options(SSL *s, uint64_t op);
 596
 597 # define SSL_CTX_set_mode(ctx,op) \
 598         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
 599 # define SSL_CTX_clear_mode(ctx,op) \
 600         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
 601 # define SSL_CTX_get_mode(ctx) \
 602         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
 603 # define SSL_clear_mode(ssl,op) \
 604         SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
 605 # define SSL_set_mode(ssl,op) \
 606         SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
 607 # define SSL_get_mode(ssl) \
 608         SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
 609 # define SSL_set_mtu(ssl, mtu) \
 610         SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
 611 # define DTLS_set_link_mtu(ssl, mtu) \
 612         SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
 613 # define DTLS_get_link_min_mtu(ssl) \
 614         SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
 615
 616 # define SSL_get_secure_renegotiation_support(ssl) \
 617         SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
 618
 619 # define SSL_CTX_set_cert_flags(ctx,op) \
 620         SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
 621 # define SSL_set_cert_flags(s,op) \
 622         SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
 623 # define SSL_CTX_clear_cert_flags(ctx,op) \
 624         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
 625 # define SSL_clear_cert_flags(s,op) \
 626         SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
 627
 628 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
 629                               void (*cb) (int write_p, int version,
 630                                           int content_type, const void *buf,
 631                                           size_t len, SSL *ssl, void *arg));
 632 void SSL_set_msg_callback(SSL *ssl,
 633                           void (*cb) (int write_p, int version,
 634                                       int content_type, const void *buf,
 635                                       size_t len, SSL *ssl, void *arg));
 636 # define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
 637 # define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
 638
 639 # define SSL_get_extms_support(s) \
 640         SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
 641
 642 # ifndef OPENSSL_NO_SRP
 643 /* see tls_srp.c */
 644 #  ifndef OPENSSL_NO_DEPRECATED_3_0
 645 OSSL_DEPRECATEDIN_3_0 __owur int SSL_SRP_CTX_init(SSL *s);
 646 OSSL_DEPRECATEDIN_3_0 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
 647 OSSL_DEPRECATEDIN_3_0 int SSL_SRP_CTX_free(SSL *ctx);
 648 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
 649 OSSL_DEPRECATEDIN_3_0 __owur int SSL_srp_server_param_with_username(SSL *s,
 650                                                                     int *ad);
 651 OSSL_DEPRECATEDIN_3_0 __owur int SRP_Calc_A_param(SSL *s);
 652 #  endif
 653 # endif
 654
 655 /* 100k max cert list */
 656 # define SSL_MAX_CERT_LIST_DEFAULT (1024*100)
 657
 658 # define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT      (1024*20)
 659
 660 /*
 661  * This callback type is used inside SSL_CTX, SSL, and in the functions that
 662  * set them. It is used to override the generation of SSL/TLS session IDs in
 663  * a server. Return value should be zero on an error, non-zero to proceed.
 664  * Also, callbacks should themselves check if the id they generate is unique
 665  * otherwise the SSL handshake will fail with an error - callbacks can do
 666  * this using the 'ssl' value they're passed by;
 667  * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
 668  * is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
 669  * bytes. The callback can alter this length to be less if desired. It is
 670  * also an error for the callback to set the size to zero.
 671  */
 672 typedef int (*GEN_SESSION_CB) (SSL *ssl, unsigned char *id,
 673                                unsigned int *id_len);
 674
 675 # define SSL_SESS_CACHE_OFF                      0x0000
 676 # define SSL_SESS_CACHE_CLIENT                   0x0001
 677 # define SSL_SESS_CACHE_SERVER                   0x0002
 678 # define SSL_SESS_CACHE_BOTH     (SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
 679 # define SSL_SESS_CACHE_NO_AUTO_CLEAR            0x0080
 680 /* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
 681 # define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP       0x0100
 682 # define SSL_SESS_CACHE_NO_INTERNAL_STORE        0x0200
 683 # define SSL_SESS_CACHE_NO_INTERNAL \
 684         (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)
 685 # define SSL_SESS_CACHE_UPDATE_TIME              0x0400
 686
 687 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
 688 # define SSL_CTX_sess_number(ctx) \
 689         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
 690 # define SSL_CTX_sess_connect(ctx) \
 691         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
 692 # define SSL_CTX_sess_connect_good(ctx) \
 693         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
 694 # define SSL_CTX_sess_connect_renegotiate(ctx) \
 695         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
 696 # define SSL_CTX_sess_accept(ctx) \
 697         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
 698 # define SSL_CTX_sess_accept_renegotiate(ctx) \
 699         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
 700 # define SSL_CTX_sess_accept_good(ctx) \
 701         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
 702 # define SSL_CTX_sess_hits(ctx) \
 703         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
 704 # define SSL_CTX_sess_cb_hits(ctx) \
 705         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
 706 # define SSL_CTX_sess_misses(ctx) \
 707         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
 708 # define SSL_CTX_sess_timeouts(ctx) \
 709         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
 710 # define SSL_CTX_sess_cache_full(ctx) \
 711         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
 712
 713 void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
 714                              int (*new_session_cb) (struct ssl_st *ssl,
 715                                                     SSL_SESSION *sess));
 716 int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
 717                                               SSL_SESSION *sess);
 718 void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
 719                                 void (*remove_session_cb) (struct ssl_ctx_st
 720                                                            *ctx,
 721                                                            SSL_SESSION *sess));
 722 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (struct ssl_ctx_st *ctx,
 723                                                   SSL_SESSION *sess);
 724 void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
 725                              SSL_SESSION *(*get_session_cb) (struct ssl_st
 726                                                              *ssl,
 727                                                              const unsigned char
 728                                                              *data, int len,
 729                                                              int *copy));
 730 SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
 731                                                        const unsigned char *data,
 732                                                        int len, int *copy);
 733 void SSL_CTX_set_info_callback(SSL_CTX *ctx,
 734                                void (*cb) (const SSL *ssl, int type, int val));
 735 void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
 736                                                  int val);
 737 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
 738                                 int (*client_cert_cb) (SSL *ssl, X509 **x509,
 739                                                        EVP_PKEY **pkey));
 740 int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
 741                                                  EVP_PKEY **pkey);
 742 # ifndef OPENSSL_NO_ENGINE
 743 __owur int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
 744 # endif
 745 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
 746                                     int (*app_gen_cookie_cb) (SSL *ssl,
 747                                                               unsigned char
 748                                                               *cookie,
 749                                                               unsigned int
 750                                                               *cookie_len));
 751 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
 752                                   int (*app_verify_cookie_cb) (SSL *ssl,
 753                                                                const unsigned
 754                                                                char *cookie,
 755                                                                unsigned int
 756                                                                cookie_len));
 757
 758 void SSL_CTX_set_stateless_cookie_generate_cb(
 759     SSL_CTX *ctx,
 760     int (*gen_stateless_cookie_cb) (SSL *ssl,
 761                                     unsigned char *cookie,
 762                                     size_t *cookie_len));
 763 void SSL_CTX_set_stateless_cookie_verify_cb(
 764     SSL_CTX *ctx,
 765     int (*verify_stateless_cookie_cb) (SSL *ssl,
 766                                        const unsigned char *cookie,
 767                                        size_t cookie_len));
 768 # ifndef OPENSSL_NO_NEXTPROTONEG
 769
 770 typedef int (*SSL_CTX_npn_advertised_cb_func)(SSL *ssl,
 771                                               const unsigned char **out,
 772                                               unsigned int *outlen,
 773                                               void *arg);
 774 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
 775                                            SSL_CTX_npn_advertised_cb_func cb,
 776                                            void *arg);
 777 #  define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
 778
 779 typedef int (*SSL_CTX_npn_select_cb_func)(SSL *s,
 780                                           unsigned char **out,
 781                                           unsigned char *outlen,
 782                                           const unsigned char *in,
 783                                           unsigned int inlen,
 784                                           void *arg);
 785 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
 786                                       SSL_CTX_npn_select_cb_func cb,
 787                                       void *arg);
 788 #  define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
 789
 790 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
 791                                     unsigned *len);
 792 #  define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
 793 # endif
 794
 795 __owur int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
 796                                  const unsigned char *in, unsigned int inlen,
 797                                  const unsigned char *client,
 798                                  unsigned int client_len);
 799
 800 # define OPENSSL_NPN_UNSUPPORTED 0
 801 # define OPENSSL_NPN_NEGOTIATED  1
 802 # define OPENSSL_NPN_NO_OVERLAP  2
 803
 804 __owur int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
 805                                    unsigned int protos_len);
 806 __owur int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
 807                                unsigned int protos_len);
 808 typedef int (*SSL_CTX_alpn_select_cb_func)(SSL *ssl,
 809                                            const unsigned char **out,
 810                                            unsigned char *outlen,
 811                                            const unsigned char *in,
 812                                            unsigned int inlen,
 813                                            void *arg);
 814 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
 815                                 SSL_CTX_alpn_select_cb_func cb,
 816                                 void *arg);
 817 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
 818                             unsigned int *len);
 819
 820 # ifndef OPENSSL_NO_PSK
 821 /*
 822  * the maximum length of the buffer given to callbacks containing the
 823  * resulting identity/psk
 824  */
 825 #  define PSK_MAX_IDENTITY_LEN 256
 826 #  define PSK_MAX_PSK_LEN 512
 827 typedef unsigned int (*SSL_psk_client_cb_func)(SSL *ssl,
 828                                                const char *hint,
 829                                                char *identity,
 830                                                unsigned int max_identity_len,
 831                                                unsigned char *psk,
 832                                                unsigned int max_psk_len);
 833 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
 834 void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
 835
 836 typedef unsigned int (*SSL_psk_server_cb_func)(SSL *ssl,
 837                                                const char *identity,
 838                                                unsigned char *psk,
 839                                                unsigned int max_psk_len);
 840 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
 841 void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
 842
 843 __owur int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
 844 __owur int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
 845 const char *SSL_get_psk_identity_hint(const SSL *s);
 846 const char *SSL_get_psk_identity(const SSL *s);
 847 # endif
 848
 849 typedef int (*SSL_psk_find_session_cb_func)(SSL *ssl,
 850                                             const unsigned char *identity,
 851                                             size_t identity_len,
 852                                             SSL_SESSION **sess);
 853 typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
 854                                            const unsigned char **id,
 855                                            size_t *idlen,
 856                                            SSL_SESSION **sess);
 857
 858 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
 859 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
 860                                            SSL_psk_find_session_cb_func cb);
 861 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
 862 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
 863                                           SSL_psk_use_session_cb_func cb);
 864
 865 /* Register callbacks to handle custom TLS Extensions for client or server. */
 866
 867 __owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
 868                                          unsigned int ext_type);
 869
 870 __owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
 871                                          unsigned int ext_type,
 872                                          custom_ext_add_cb add_cb,
 873                                          custom_ext_free_cb free_cb,
 874                                          void *add_arg,
 875                                          custom_ext_parse_cb parse_cb,
 876                                          void *parse_arg);
 877
 878 __owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
 879                                          unsigned int ext_type,
 880                                          custom_ext_add_cb add_cb,
 881                                          custom_ext_free_cb free_cb,
 882                                          void *add_arg,
 883                                          custom_ext_parse_cb parse_cb,
 884                                          void *parse_arg);
 885
 886 __owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
 887                                   unsigned int context,
 888                                   SSL_custom_ext_add_cb_ex add_cb,
 889                                   SSL_custom_ext_free_cb_ex free_cb,
 890                                   void *add_arg,
 891                                   SSL_custom_ext_parse_cb_ex parse_cb,
 892                                   void *parse_arg);
 893
 894 __owur int SSL_extension_supported(unsigned int ext_type);
 895
 896 # define SSL_NOTHING            1
 897 # define SSL_WRITING            2
 898 # define SSL_READING            3
 899 # define SSL_X509_LOOKUP        4
 900 # define SSL_ASYNC_PAUSED       5
 901 # define SSL_ASYNC_NO_JOBS      6
 902 # define SSL_CLIENT_HELLO_CB    7
 903 # define SSL_RETRY_VERIFY       8
 904
 905 /* These will only be used when doing non-blocking IO */
 906 # define SSL_want_nothing(s)         (SSL_want(s) == SSL_NOTHING)
 907 # define SSL_want_read(s)            (SSL_want(s) == SSL_READING)
 908 # define SSL_want_write(s)           (SSL_want(s) == SSL_WRITING)
 909 # define SSL_want_x509_lookup(s)     (SSL_want(s) == SSL_X509_LOOKUP)
 910 # define SSL_want_retry_verify(s)    (SSL_want(s) == SSL_RETRY_VERIFY)
 911 # define SSL_want_async(s)           (SSL_want(s) == SSL_ASYNC_PAUSED)
 912 # define SSL_want_async_job(s)       (SSL_want(s) == SSL_ASYNC_NO_JOBS)
 913 # define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
 914
 915 # define SSL_MAC_FLAG_READ_MAC_STREAM 1
 916 # define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
 917 # define SSL_MAC_FLAG_READ_MAC_TLSTREE 4
 918 # define SSL_MAC_FLAG_WRITE_MAC_TLSTREE 8
 919
 920 /*
 921  * A callback for logging out TLS key material. This callback should log out
 922  * |line| followed by a newline.
 923  */
 924 typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);
 925
 926 /*
 927  * SSL_CTX_set_keylog_callback configures a callback to log key material. This
 928  * is intended for debugging use with tools like Wireshark. The cb function
 929  * should log line followed by a newline.
 930  */
 931 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
 932
 933 /*
 934  * SSL_CTX_get_keylog_callback returns the callback configured by
 935  * SSL_CTX_set_keylog_callback.
 936  */
 937 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
 938
 939 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
 940 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
 941 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
 942 uint32_t SSL_get_max_early_data(const SSL *s);
 943 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
 944 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
 945 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
 946 uint32_t SSL_get_recv_max_early_data(const SSL *s);
 947
 948 #ifdef __cplusplus
 949 }
 950 #endif
 951
 952 # include <openssl/ssl2.h>
 953 # include <openssl/ssl3.h>
 954 # include <openssl/tls1.h>      /* This is mostly sslv3 with a few tweaks */
 955 # include <openssl/dtls1.h>     /* Datagram TLS */
 956 # include <openssl/srtp.h>      /* Support for the use_srtp extension */
 957 # include <openssl/quic.h>
 958
 959 #ifdef  __cplusplus
 960 extern "C" {
 961 #endif
 962
 963 /*
 964  * These need to be after the above set of includes due to a compiler bug
 965  * in VisualStudio 2015
 966  */
 967 {-
 968     generate_const_stack_macros("SSL_CIPHER")
 969     .generate_stack_macros("SSL_COMP");
 970 -}
 971
 972 /* compatibility */
 973 # define SSL_set_app_data(s,arg)         (SSL_set_ex_data(s,0,(char *)(arg)))
 974 # define SSL_get_app_data(s)             (SSL_get_ex_data(s,0))
 975 # define SSL_SESSION_set_app_data(s,a)   (SSL_SESSION_set_ex_data(s,0, \
 976                                                                   (char *)(a)))
 977 # define SSL_SESSION_get_app_data(s)     (SSL_SESSION_get_ex_data(s,0))
 978 # define SSL_CTX_get_app_data(ctx)       (SSL_CTX_get_ex_data(ctx,0))
 979 # define SSL_CTX_set_app_data(ctx,arg)   (SSL_CTX_set_ex_data(ctx,0, \
 980                                                               (char *)(arg)))
 981 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
 982 OSSL_DEPRECATEDIN_1_1_0 void SSL_set_debug(SSL *s, int debug);
 983 # endif
 984
 985 /* TLSv1.3 KeyUpdate message types */
 986 /* -1 used so that this is an invalid value for the on-the-wire protocol */
 987 #define SSL_KEY_UPDATE_NONE             -1
 988 /* Values as defined for the on-the-wire protocol */
 989 #define SSL_KEY_UPDATE_NOT_REQUESTED     0
 990 #define SSL_KEY_UPDATE_REQUESTED         1
 991
 992 /*
 993  * The valid handshake states (one for each type message sent and one for each
 994  * type of message received). There are also two "special" states:
 995  * TLS = TLS or DTLS state
 996  * DTLS = DTLS specific state
 997  * CR/SR = Client Read/Server Read
 998  * CW/SW = Client Write/Server Write
 999  *
1000  * The "special" states are:
1001  * TLS_ST_BEFORE = No handshake has been initiated yet
1002  * TLS_ST_OK = A handshake has been successfully completed
1003  */
1004 typedef enum {
1005     TLS_ST_BEFORE,
1006     TLS_ST_OK,
1007     DTLS_ST_CR_HELLO_VERIFY_REQUEST,
1008     TLS_ST_CR_SRVR_HELLO,
1009     TLS_ST_CR_CERT,
1010     TLS_ST_CR_COMP_CERT,
1011     TLS_ST_CR_CERT_STATUS,
1012     TLS_ST_CR_KEY_EXCH,
1013     TLS_ST_CR_CERT_REQ,
1014     TLS_ST_CR_SRVR_DONE,
1015     TLS_ST_CR_SESSION_TICKET,
1016     TLS_ST_CR_CHANGE,
1017     TLS_ST_CR_FINISHED,
1018     TLS_ST_CW_CLNT_HELLO,
1019     TLS_ST_CW_CERT,
1020     TLS_ST_CW_COMP_CERT,
1021     TLS_ST_CW_KEY_EXCH,
1022     TLS_ST_CW_CERT_VRFY,
1023     TLS_ST_CW_CHANGE,
1024     TLS_ST_CW_NEXT_PROTO,
1025     TLS_ST_CW_FINISHED,
1026     TLS_ST_SW_HELLO_REQ,
1027     TLS_ST_SR_CLNT_HELLO,
1028     DTLS_ST_SW_HELLO_VERIFY_REQUEST,
1029     TLS_ST_SW_SRVR_HELLO,
1030     TLS_ST_SW_CERT,
1031     TLS_ST_SW_COMP_CERT,
1032     TLS_ST_SW_KEY_EXCH,
1033     TLS_ST_SW_CERT_REQ,
1034     TLS_ST_SW_SRVR_DONE,
1035     TLS_ST_SR_CERT,
1036     TLS_ST_SR_COMP_CERT,
1037     TLS_ST_SR_KEY_EXCH,
1038     TLS_ST_SR_CERT_VRFY,
1039     TLS_ST_SR_NEXT_PROTO,
1040     TLS_ST_SR_CHANGE,
1041     TLS_ST_SR_FINISHED,
1042     TLS_ST_SW_SESSION_TICKET,
1043     TLS_ST_SW_CERT_STATUS,
1044     TLS_ST_SW_CHANGE,
1045     TLS_ST_SW_FINISHED,
1046     TLS_ST_SW_ENCRYPTED_EXTENSIONS,
1047     TLS_ST_CR_ENCRYPTED_EXTENSIONS,
1048     TLS_ST_CR_CERT_VRFY,
1049     TLS_ST_SW_CERT_VRFY,
1050     TLS_ST_CR_HELLO_REQ,
1051     TLS_ST_SW_KEY_UPDATE,
1052     TLS_ST_CW_KEY_UPDATE,
1053     TLS_ST_SR_KEY_UPDATE,
1054     TLS_ST_CR_KEY_UPDATE,
1055     TLS_ST_EARLY_DATA,
1056     TLS_ST_PENDING_EARLY_DATA_END,
1057     TLS_ST_CW_END_OF_EARLY_DATA,
1058     TLS_ST_SR_END_OF_EARLY_DATA
1059 } OSSL_HANDSHAKE_STATE;
1060
1061 /*
1062  * Most of the following state values are no longer used and are defined to be
1063  * the closest equivalent value in the current state machine code. Not all
1064  * defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
1065  * and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
1066  * SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
1067  */
1068
1069 # define SSL_ST_CONNECT                  0x1000
1070 # define SSL_ST_ACCEPT                   0x2000
1071
1072 # define SSL_ST_MASK                     0x0FFF
1073
1074 # define SSL_CB_LOOP                     0x01
1075 # define SSL_CB_EXIT                     0x02
1076 # define SSL_CB_READ                     0x04
1077 # define SSL_CB_WRITE                    0x08
1078 # define SSL_CB_ALERT                    0x4000/* used in callback */
1079 # define SSL_CB_READ_ALERT               (SSL_CB_ALERT|SSL_CB_READ)
1080 # define SSL_CB_WRITE_ALERT              (SSL_CB_ALERT|SSL_CB_WRITE)
1081 # define SSL_CB_ACCEPT_LOOP              (SSL_ST_ACCEPT|SSL_CB_LOOP)
1082 # define SSL_CB_ACCEPT_EXIT              (SSL_ST_ACCEPT|SSL_CB_EXIT)
1083 # define SSL_CB_CONNECT_LOOP             (SSL_ST_CONNECT|SSL_CB_LOOP)
1084 # define SSL_CB_CONNECT_EXIT             (SSL_ST_CONNECT|SSL_CB_EXIT)
1085 # define SSL_CB_HANDSHAKE_START          0x10
1086 # define SSL_CB_HANDSHAKE_DONE           0x20
1087
1088 /* Is the SSL_connection established? */
1089 # define SSL_in_connect_init(a)          (SSL_in_init(a) && !SSL_is_server(a))
1090 # define SSL_in_accept_init(a)           (SSL_in_init(a) && SSL_is_server(a))
1091 int SSL_in_init(const SSL *s);
1092 int SSL_in_before(const SSL *s);
1093 int SSL_is_init_finished(const SSL *s);
1094
1095 /*
1096  * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
1097  * should not need these
1098  */
1099 # define SSL_ST_READ_HEADER                      0xF0
1100 # define SSL_ST_READ_BODY                        0xF1
1101 # define SSL_ST_READ_DONE                        0xF2
1102
1103 /*-
1104  * Obtain latest Finished message
1105  *   -- that we sent (SSL_get_finished)
1106  *   -- that we expected from peer (SSL_get_peer_finished).
1107  * Returns length (0 == no Finished so far), copies up to 'count' bytes.
1108  */
1109 size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
1110 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
1111
1112 /*
1113  * use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
1114  * 'ored' with SSL_VERIFY_PEER if they are desired
1115  */
1116 # define SSL_VERIFY_NONE                 0x00
1117 # define SSL_VERIFY_PEER                 0x01
1118 # define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
1119 # define SSL_VERIFY_CLIENT_ONCE          0x04
1120 # define SSL_VERIFY_POST_HANDSHAKE       0x08
1121
1122 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1123 #  define OpenSSL_add_ssl_algorithms()   SSL_library_init()
1124 #  define SSLeay_add_ssl_algorithms()    SSL_library_init()
1125 # endif
1126
1127 /* More backward compatibility */
1128 # define SSL_get_cipher(s) \
1129                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1130 # define SSL_get_cipher_bits(s,np) \
1131                 SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
1132 # define SSL_get_cipher_version(s) \
1133                 SSL_CIPHER_get_version(SSL_get_current_cipher(s))
1134 # define SSL_get_cipher_name(s) \
1135                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1136 # define SSL_get_time(a)         SSL_SESSION_get_time(a)
1137 # define SSL_set_time(a,b)       SSL_SESSION_set_time((a),(b))
1138 # define SSL_get_timeout(a)      SSL_SESSION_get_timeout(a)
1139 # define SSL_set_timeout(a,b)    SSL_SESSION_set_timeout((a),(b))
1140
1141 # define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
1142 # define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
1143
1144 DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
1145 # define SSL_AD_REASON_OFFSET            1000/* offset to get SSL_R_... value
1146                                               * from SSL_AD_... */
1147 /* These alert types are for SSLv3 and TLSv1 */
1148 # define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
1149 /* fatal */
1150 # define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE
1151 /* fatal */
1152 # define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC
1153 # define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
1154 # define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
1155 /* fatal */
1156 # define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE
1157 /* fatal */
1158 # define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE
1159 /* Not for TLS */
1160 # define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE
1161 # define SSL_AD_BAD_CERTIFICATE          SSL3_AD_BAD_CERTIFICATE
1162 # define SSL_AD_UNSUPPORTED_CERTIFICATE  SSL3_AD_UNSUPPORTED_CERTIFICATE
1163 # define SSL_AD_CERTIFICATE_REVOKED      SSL3_AD_CERTIFICATE_REVOKED
1164 # define SSL_AD_CERTIFICATE_EXPIRED      SSL3_AD_CERTIFICATE_EXPIRED
1165 # define SSL_AD_CERTIFICATE_UNKNOWN      SSL3_AD_CERTIFICATE_UNKNOWN
1166 /* fatal */
1167 # define SSL_AD_ILLEGAL_PARAMETER        SSL3_AD_ILLEGAL_PARAMETER
1168 /* fatal */
1169 # define SSL_AD_UNKNOWN_CA               TLS1_AD_UNKNOWN_CA
1170 /* fatal */
1171 # define SSL_AD_ACCESS_DENIED            TLS1_AD_ACCESS_DENIED
1172 /* fatal */
1173 # define SSL_AD_DECODE_ERROR             TLS1_AD_DECODE_ERROR
1174 # define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
1175 /* fatal */
1176 # define SSL_AD_EXPORT_RESTRICTION       TLS1_AD_EXPORT_RESTRICTION
1177 /* fatal */
1178 # define SSL_AD_PROTOCOL_VERSION         TLS1_AD_PROTOCOL_VERSION
1179 /* fatal */
1180 # define SSL_AD_INSUFFICIENT_SECURITY    TLS1_AD_INSUFFICIENT_SECURITY
1181 /* fatal */
1182 # define SSL_AD_INTERNAL_ERROR           TLS1_AD_INTERNAL_ERROR
1183 # define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
1184 # define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
1185 # define SSL_AD_MISSING_EXTENSION        TLS13_AD_MISSING_EXTENSION
1186 # define SSL_AD_CERTIFICATE_REQUIRED     TLS13_AD_CERTIFICATE_REQUIRED
1187 # define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
1188 # define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
1189 # define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
1190 # define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
1191 # define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
1192 /* fatal */
1193 # define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY
1194 /* fatal */
1195 # define SSL_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK
1196 # define SSL_AD_NO_APPLICATION_PROTOCOL  TLS1_AD_NO_APPLICATION_PROTOCOL
1197 # define SSL_ERROR_NONE                  0
1198 # define SSL_ERROR_SSL                   1
1199 # define SSL_ERROR_WANT_READ             2
1200 # define SSL_ERROR_WANT_WRITE            3
1201 # define SSL_ERROR_WANT_X509_LOOKUP      4
1202 # define SSL_ERROR_SYSCALL               5/* look at error stack/return
1203                                            * value/errno */
1204 # define SSL_ERROR_ZERO_RETURN           6
1205 # define SSL_ERROR_WANT_CONNECT          7
1206 # define SSL_ERROR_WANT_ACCEPT           8
1207 # define SSL_ERROR_WANT_ASYNC            9
1208 # define SSL_ERROR_WANT_ASYNC_JOB       10
1209 # define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
1210 # define SSL_ERROR_WANT_RETRY_VERIFY    12
1211
1212 # ifndef OPENSSL_NO_DEPRECATED_3_0
1213 #  define SSL_CTRL_SET_TMP_DH                    3
1214 #  define SSL_CTRL_SET_TMP_ECDH                  4
1215 #  define SSL_CTRL_SET_TMP_DH_CB                 6
1216 # endif
1217
1218 # define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
1219 # define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
1220 # define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
1221 # define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
1222 # define SSL_CTRL_GET_FLAGS                      13
1223 # define SSL_CTRL_EXTRA_CHAIN_CERT               14
1224 # define SSL_CTRL_SET_MSG_CALLBACK               15
1225 # define SSL_CTRL_SET_MSG_CALLBACK_ARG           16
1226 /* only applies to datagram connections */
1227 # define SSL_CTRL_SET_MTU                17
1228 /* Stats */
1229 # define SSL_CTRL_SESS_NUMBER                    20
1230 # define SSL_CTRL_SESS_CONNECT                   21
1231 # define SSL_CTRL_SESS_CONNECT_GOOD              22
1232 # define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
1233 # define SSL_CTRL_SESS_ACCEPT                    24
1234 # define SSL_CTRL_SESS_ACCEPT_GOOD               25
1235 # define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
1236 # define SSL_CTRL_SESS_HIT                       27
1237 # define SSL_CTRL_SESS_CB_HIT                    28
1238 # define SSL_CTRL_SESS_MISSES                    29
1239 # define SSL_CTRL_SESS_TIMEOUTS                  30
1240 # define SSL_CTRL_SESS_CACHE_FULL                31
1241 # define SSL_CTRL_MODE                           33
1242 # define SSL_CTRL_GET_READ_AHEAD                 40
1243 # define SSL_CTRL_SET_READ_AHEAD                 41
1244 # define SSL_CTRL_SET_SESS_CACHE_SIZE            42
1245 # define SSL_CTRL_GET_SESS_CACHE_SIZE            43
1246 # define SSL_CTRL_SET_SESS_CACHE_MODE            44
1247 # define SSL_CTRL_GET_SESS_CACHE_MODE            45
1248 # define SSL_CTRL_GET_MAX_CERT_LIST              50
1249 # define SSL_CTRL_SET_MAX_CERT_LIST              51
1250 # define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52
1251 /* see tls1.h for macros based on these */
1252 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
1253 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
1254 # define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
1255 # define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
1256 # define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
1257 # define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
1258 # define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
1259 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60 */
1260 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 */
1261 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 */
1262 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
1263 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
1264 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
1265 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
1266 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
1267 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
1268 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
1269 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
1270 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71
1271 # ifndef OPENSSL_NO_DEPRECATED_3_0
1272 #  define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB      72
1273 # endif
1274 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
1275 # define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
1276 # define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77
1277 # define SSL_CTRL_SET_SRP_ARG            78
1278 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
1279 # define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
1280 # define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
1281 # define DTLS_CTRL_GET_TIMEOUT           73
1282 # define DTLS_CTRL_HANDLE_TIMEOUT        74
1283 # define SSL_CTRL_GET_RI_SUPPORT                 76
1284 # define SSL_CTRL_CLEAR_MODE                     78
1285 # define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB      79
1286 # define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
1287 # define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83
1288 # define SSL_CTRL_CHAIN                          88
1289 # define SSL_CTRL_CHAIN_CERT                     89
1290 # define SSL_CTRL_GET_GROUPS                     90
1291 # define SSL_CTRL_SET_GROUPS                     91
1292 # define SSL_CTRL_SET_GROUPS_LIST                92
1293 # define SSL_CTRL_GET_SHARED_GROUP               93
1294 # define SSL_CTRL_SET_SIGALGS                    97
1295 # define SSL_CTRL_SET_SIGALGS_LIST               98
1296 # define SSL_CTRL_CERT_FLAGS                     99
1297 # define SSL_CTRL_CLEAR_CERT_FLAGS               100
1298 # define SSL_CTRL_SET_CLIENT_SIGALGS             101
1299 # define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
1300 # define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
1301 # define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
1302 # define SSL_CTRL_BUILD_CERT_CHAIN               105
1303 # define SSL_CTRL_SET_VERIFY_CERT_STORE          106
1304 # define SSL_CTRL_SET_CHAIN_CERT_STORE           107
1305 # define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
1306 # define SSL_CTRL_GET_PEER_TMP_KEY               109
1307 # define SSL_CTRL_GET_RAW_CIPHERLIST             110
1308 # define SSL_CTRL_GET_EC_POINT_FORMATS           111
1309 # define SSL_CTRL_GET_CHAIN_CERTS                115
1310 # define SSL_CTRL_SELECT_CURRENT_CERT            116
1311 # define SSL_CTRL_SET_CURRENT_CERT               117
1312 # define SSL_CTRL_SET_DH_AUTO                    118
1313 # define DTLS_CTRL_SET_LINK_MTU                  120
1314 # define DTLS_CTRL_GET_LINK_MIN_MTU              121
1315 # define SSL_CTRL_GET_EXTMS_SUPPORT              122
1316 # define SSL_CTRL_SET_MIN_PROTO_VERSION          123
1317 # define SSL_CTRL_SET_MAX_PROTO_VERSION          124
1318 # define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT        125
1319 # define SSL_CTRL_SET_MAX_PIPELINES              126
1320 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE     127
1321 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB       128
1322 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG   129
1323 # define SSL_CTRL_GET_MIN_PROTO_VERSION          130
1324 # define SSL_CTRL_GET_MAX_PROTO_VERSION          131
1325 # define SSL_CTRL_GET_SIGNATURE_NID              132
1326 # define SSL_CTRL_GET_TMP_KEY                    133
1327 # define SSL_CTRL_GET_NEGOTIATED_GROUP           134
1328 # define SSL_CTRL_GET_IANA_GROUPS                135
1329 # define SSL_CTRL_SET_RETRY_VERIFY               136
1330 # define SSL_CTRL_GET_VERIFY_CERT_STORE          137
1331 # define SSL_CTRL_GET_CHAIN_CERT_STORE           138
1332 # define SSL_CERT_SET_FIRST                      1
1333 # define SSL_CERT_SET_NEXT                       2
1334 # define SSL_CERT_SET_SERVER                     3
1335 # define DTLSv1_get_timeout(ssl, arg) \
1336         SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
1337 # define DTLSv1_handle_timeout(ssl) \
1338         SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
1339 # define SSL_num_renegotiations(ssl) \
1340         SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
1341 # define SSL_clear_num_renegotiations(ssl) \
1342         SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
1343 # define SSL_total_renegotiations(ssl) \
1344         SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
1345 # ifndef OPENSSL_NO_DEPRECATED_3_0
1346 #  define SSL_CTX_set_tmp_dh(ctx,dh) \
1347         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1348 # endif
1349 # define SSL_CTX_set_dh_auto(ctx, onoff) \
1350         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1351 # define SSL_set_dh_auto(s, onoff) \
1352         SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1353 # ifndef OPENSSL_NO_DEPRECATED_3_0
1354 #  define SSL_set_tmp_dh(ssl,dh) \
1355         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1356 # endif
1357 # ifndef OPENSSL_NO_DEPRECATED_3_0
1358 #  define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
1359         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1360 #  define SSL_set_tmp_ecdh(ssl,ecdh) \
1361         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1362 # endif
1363 # define SSL_CTX_add_extra_chain_cert(ctx,x509) \
1364         SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
1365 # define SSL_CTX_get_extra_chain_certs(ctx,px509) \
1366         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
1367 # define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
1368         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
1369 # define SSL_CTX_clear_extra_chain_certs(ctx) \
1370         SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
1371 # define SSL_CTX_set0_chain(ctx,sk) \
1372         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1373 # define SSL_CTX_set1_chain(ctx,sk) \
1374         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1375 # define SSL_CTX_add0_chain_cert(ctx,x509) \
1376         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1377 # define SSL_CTX_add1_chain_cert(ctx,x509) \
1378         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1379 # define SSL_CTX_get0_chain_certs(ctx,px509) \
1380         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1381 # define SSL_CTX_clear_chain_certs(ctx) \
1382         SSL_CTX_set0_chain(ctx,NULL)
1383 # define SSL_CTX_build_cert_chain(ctx, flags) \
1384         SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1385 # define SSL_CTX_select_current_cert(ctx,x509) \
1386         SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1387 # define SSL_CTX_set_current_cert(ctx, op) \
1388         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1389 # define SSL_CTX_set0_verify_cert_store(ctx,st) \
1390         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1391 # define SSL_CTX_set1_verify_cert_store(ctx,st) \
1392         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1393 # define SSL_CTX_get0_verify_cert_store(ctx,st) \
1394         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1395 # define SSL_CTX_set0_chain_cert_store(ctx,st) \
1396         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1397 # define SSL_CTX_set1_chain_cert_store(ctx,st) \
1398         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1399 # define SSL_CTX_get0_chain_cert_store(ctx,st) \
1400         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1401 # define SSL_set0_chain(s,sk) \
1402         SSL_ctrl(s,SSL_CTRL_CHAIN,0,(char *)(sk))
1403 # define SSL_set1_chain(s,sk) \
1404         SSL_ctrl(s,SSL_CTRL_CHAIN,1,(char *)(sk))
1405 # define SSL_add0_chain_cert(s,x509) \
1406         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1407 # define SSL_add1_chain_cert(s,x509) \
1408         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1409 # define SSL_get0_chain_certs(s,px509) \
1410         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1411 # define SSL_clear_chain_certs(s) \
1412         SSL_set0_chain(s,NULL)
1413 # define SSL_build_cert_chain(s, flags) \
1414         SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1415 # define SSL_select_current_cert(s,x509) \
1416         SSL_ctrl(s,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1417 # define SSL_set_current_cert(s,op) \
1418         SSL_ctrl(s,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1419 # define SSL_set0_verify_cert_store(s,st) \
1420         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1421 # define SSL_set1_verify_cert_store(s,st) \
1422         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1423 #define SSL_get0_verify_cert_store(s,st) \
1424         SSL_ctrl(s,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1425 # define SSL_set0_chain_cert_store(s,st) \
1426         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1427 # define SSL_set1_chain_cert_store(s,st) \
1428         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1429 #define SSL_get0_chain_cert_store(s,st) \
1430         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1431
1432 # define SSL_get1_groups(s, glist) \
1433         SSL_ctrl(s,SSL_CTRL_GET_GROUPS,0,(int*)(glist))
1434 # define SSL_get0_iana_groups(s, plst) \
1435         SSL_ctrl(s,SSL_CTRL_GET_IANA_GROUPS,0,(uint16_t **)(plst))
1436 # define SSL_CTX_set1_groups(ctx, glist, glistlen) \
1437         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(int *)(glist))
1438 # define SSL_CTX_set1_groups_list(ctx, s) \
1439         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1440 # define SSL_set1_groups(s, glist, glistlen) \
1441         SSL_ctrl(s,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1442 # define SSL_set1_groups_list(s, str) \
1443         SSL_ctrl(s,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(str))
1444 # define SSL_get_shared_group(s, n) \
1445         SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
1446 # define SSL_get_negotiated_group(s) \
1447         SSL_ctrl(s,SSL_CTRL_GET_NEGOTIATED_GROUP,0,NULL)
1448 # define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
1449         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1450 # define SSL_CTX_set1_sigalgs_list(ctx, s) \
1451         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1452 # define SSL_set1_sigalgs(s, slist, slistlen) \
1453         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1454 # define SSL_set1_sigalgs_list(s, str) \
1455         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(str))
1456 # define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
1457         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1458 # define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
1459         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1460 # define SSL_set1_client_sigalgs(s, slist, slistlen) \
1461         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1462 # define SSL_set1_client_sigalgs_list(s, str) \
1463         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(str))
1464 # define SSL_get0_certificate_types(s, clist) \
1465         SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
1466 # define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
1467         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
1468                      (char *)(clist))
1469 # define SSL_set1_client_certificate_types(s, clist, clistlen) \
1470         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
1471 # define SSL_get_signature_nid(s, pn) \
1472         SSL_ctrl(s,SSL_CTRL_GET_SIGNATURE_NID,0,pn)
1473 # define SSL_get_peer_signature_nid(s, pn) \
1474         SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
1475 # define SSL_get_peer_tmp_key(s, pk) \
1476         SSL_ctrl(s,SSL_CTRL_GET_PEER_TMP_KEY,0,pk)
1477 # define SSL_get_tmp_key(s, pk) \
1478         SSL_ctrl(s,SSL_CTRL_GET_TMP_KEY,0,pk)
1479 # define SSL_get0_raw_cipherlist(s, plst) \
1480         SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
1481 # define SSL_get0_ec_point_formats(s, plst) \
1482         SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
1483 # define SSL_CTX_set_min_proto_version(ctx, version) \
1484         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1485 # define SSL_CTX_set_max_proto_version(ctx, version) \
1486         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1487 # define SSL_CTX_get_min_proto_version(ctx) \
1488         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1489 # define SSL_CTX_get_max_proto_version(ctx) \
1490         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1491 # define SSL_set_min_proto_version(s, version) \
1492         SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1493 # define SSL_set_max_proto_version(s, version) \
1494         SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1495 # define SSL_get_min_proto_version(s) \
1496         SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1497 # define SSL_get_max_proto_version(s) \
1498         SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1499
1500 const char *SSL_group_to_name(SSL *s, int id);
1501
1502 /* Backwards compatibility, original 1.1.0 names */
1503 # define SSL_CTRL_GET_SERVER_TMP_KEY \
1504          SSL_CTRL_GET_PEER_TMP_KEY
1505 # define SSL_get_server_tmp_key(s, pk) \
1506          SSL_get_peer_tmp_key(s, pk)
1507
1508 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey);
1509 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey);
1510
1511 /*
1512  * The following symbol names are old and obsolete. They are kept
1513  * for compatibility reasons only and should not be used anymore.
1514  */
1515 # define SSL_CTRL_GET_CURVES           SSL_CTRL_GET_GROUPS
1516 # define SSL_CTRL_SET_CURVES           SSL_CTRL_SET_GROUPS
1517 # define SSL_CTRL_SET_CURVES_LIST      SSL_CTRL_SET_GROUPS_LIST
1518 # define SSL_CTRL_GET_SHARED_CURVE     SSL_CTRL_GET_SHARED_GROUP
1519
1520 # define SSL_get1_curves               SSL_get1_groups
1521 # define SSL_CTX_set1_curves           SSL_CTX_set1_groups
1522 # define SSL_CTX_set1_curves_list      SSL_CTX_set1_groups_list
1523 # define SSL_set1_curves               SSL_set1_groups
1524 # define SSL_set1_curves_list          SSL_set1_groups_list
1525 # define SSL_get_shared_curve          SSL_get_shared_group
1526
1527
1528 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1529 /* Provide some compatibility macros for removed functionality. */
1530 #  define SSL_CTX_need_tmp_RSA(ctx)                0
1531 #  define SSL_CTX_set_tmp_rsa(ctx,rsa)             1
1532 #  define SSL_need_tmp_RSA(ssl)                    0
1533 #  define SSL_set_tmp_rsa(ssl,rsa)                 1
1534 #  define SSL_CTX_set_ecdh_auto(dummy, onoff)      ((onoff) != 0)
1535 #  define SSL_set_ecdh_auto(dummy, onoff)          ((onoff) != 0)
1536 /*
1537  * We "pretend" to call the callback to avoid warnings about unused static
1538  * functions.
1539  */
1540 #  define SSL_CTX_set_tmp_rsa_callback(ctx, cb)    while(0) (cb)(NULL, 0, 0)
1541 #  define SSL_set_tmp_rsa_callback(ssl, cb)        while(0) (cb)(NULL, 0, 0)
1542 # endif
1543 __owur const BIO_METHOD *BIO_f_ssl(void);
1544 __owur BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
1545 __owur BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
1546 __owur BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
1547 __owur int BIO_ssl_copy_session_id(BIO *to, BIO *from);
1548 void BIO_ssl_shutdown(BIO *ssl_bio);
1549
1550 __owur int SSL_CTX_set_cipher_list(SSL_CTX *, const char *str);
1551 __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
1552 __owur SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
1553                                const SSL_METHOD *meth);
1554 int SSL_CTX_up_ref(SSL_CTX *ctx);
1555 void SSL_CTX_free(SSL_CTX *);
1556 __owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
1557 __owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
1558 __owur X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
1559 void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
1560 void SSL_CTX_set1_cert_store(SSL_CTX *, X509_STORE *);
1561 __owur int SSL_want(const SSL *s);
1562 __owur int SSL_clear(SSL *s);
1563
1564 void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
1565
1566 __owur const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
1567 __owur const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s);
1568 __owur int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits);
1569 __owur const char *SSL_CIPHER_get_version(const SSL_CIPHER *c);
1570 __owur const char *SSL_CIPHER_get_name(const SSL_CIPHER *c);
1571 __owur const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
1572 __owur const char *OPENSSL_cipher_name(const char *rfc_name);
1573 __owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
1574 __owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
1575 __owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
1576 __owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
1577 __owur const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c);
1578 __owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
1579
1580 __owur int SSL_get_fd(const SSL *s);
1581 __owur int SSL_get_rfd(const SSL *s);
1582 __owur int SSL_get_wfd(const SSL *s);
1583 __owur const char *SSL_get_cipher_list(const SSL *s, int n);
1584 __owur char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size);
1585 __owur int SSL_get_read_ahead(const SSL *s);
1586 __owur int SSL_pending(const SSL *s);
1587 __owur int SSL_has_pending(const SSL *s);
1588 # ifndef OPENSSL_NO_SOCK
1589 __owur int SSL_set_fd(SSL *s, int fd);
1590 __owur int SSL_set_rfd(SSL *s, int fd);
1591 __owur int SSL_set_wfd(SSL *s, int fd);
1592 # endif
1593 void SSL_set0_rbio(SSL *s, BIO *rbio);
1594 void SSL_set0_wbio(SSL *s, BIO *wbio);
1595 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio);
1596 __owur BIO *SSL_get_rbio(const SSL *s);
1597 __owur BIO *SSL_get_wbio(const SSL *s);
1598 __owur int SSL_set_cipher_list(SSL *s, const char *str);
1599 __owur int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str);
1600 __owur int SSL_set_ciphersuites(SSL *s, const char *str);
1601 void SSL_set_read_ahead(SSL *s, int yes);
1602 __owur int SSL_get_verify_mode(const SSL *s);
1603 __owur int SSL_get_verify_depth(const SSL *s);
1604 __owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
1605 void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
1606 void SSL_set_verify_depth(SSL *s, int depth);
1607 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg);
1608 # ifndef OPENSSL_NO_DEPRECATED_3_0
1609 OSSL_DEPRECATEDIN_3_0 __owur int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
1610 OSSL_DEPRECATEDIN_3_0
1611 __owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl,
1612                                       const unsigned char *d, long len);
1613 # endif
1614 __owur int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
1615 __owur int SSL_use_PrivateKey_ASN1(int pk, SSL *ssl, const unsigned char *d,
1616                                    long len);
1617 __owur int SSL_use_certificate(SSL *ssl, X509 *x);
1618 __owur int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);
1619 __owur int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
1620                                 STACK_OF(X509) *chain, int override);
1621
1622
1623 /* serverinfo file format versions */
1624 # define SSL_SERVERINFOV1   1
1625 # define SSL_SERVERINFOV2   2
1626
1627 /* Set serverinfo data for the current active cert. */
1628 __owur int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
1629                                   size_t serverinfo_length);
1630 __owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
1631                                      const unsigned char *serverinfo,
1632                                      size_t serverinfo_length);
1633 __owur int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
1634
1635 #ifndef OPENSSL_NO_DEPRECATED_3_0
1636 OSSL_DEPRECATEDIN_3_0
1637 __owur int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
1638 #endif
1639
1640 __owur int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
1641 __owur int SSL_use_certificate_file(SSL *ssl, const char *file, int type);
1642
1643 #ifndef OPENSSL_NO_DEPRECATED_3_0
1644 OSSL_DEPRECATEDIN_3_0
1645 __owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file,
1646                                           int type);
1647 #endif
1648 __owur int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
1649                                        int type);
1650 __owur int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
1651                                         int type);
1652 /* PEM type */
1653 __owur int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);
1654 __owur int SSL_use_certificate_chain_file(SSL *ssl, const char *file);
1655 __owur STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
1656 __owur STACK_OF(X509_NAME)
1657 *SSL_load_client_CA_file_ex(const char *file, OSSL_LIB_CTX *libctx,
1658                             const char *propq);
1659 __owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1660                                                const char *file);
1661 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1662                                        const char *dir);
1663 int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1664                                        const char *uri);
1665
1666 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
1667 #  define SSL_load_error_strings() \
1668     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
1669                      | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
1670 # endif
1671
1672 __owur const char *SSL_state_string(const SSL *s);
1673 __owur const char *SSL_rstate_string(const SSL *s);
1674 __owur const char *SSL_state_string_long(const SSL *s);
1675 __owur const char *SSL_rstate_string_long(const SSL *s);
1676 __owur long SSL_SESSION_get_time(const SSL_SESSION *s);
1677 __owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
1678 __owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
1679 __owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
1680 __owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
1681 __owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
1682
1683 __owur const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s);
1684 __owur int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname);
1685 void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
1686                                     const unsigned char **alpn,
1687                                     size_t *len);
1688 __owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
1689                                           const unsigned char *alpn,
1690                                           size_t len);
1691 __owur const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s);
1692 __owur int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher);
1693 __owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
1694 __owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
1695 void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
1696                              size_t *len);
1697 __owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
1698 __owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
1699                                           uint32_t max_early_data);
1700 __owur int SSL_copy_session_id(SSL *to, const SSL *from);
1701 __owur X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
1702 __owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
1703                                        const unsigned char *sid_ctx,
1704                                        unsigned int sid_ctx_len);
1705 __owur int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
1706                                unsigned int sid_len);
1707 __owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
1708
1709 __owur SSL_SESSION *SSL_SESSION_new(void);
1710 __owur SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src);
1711 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
1712                                         unsigned int *len);
1713 const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
1714                                                  unsigned int *len);
1715 __owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
1716 # ifndef OPENSSL_NO_STDIO
1717 int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *ses);
1718 # endif
1719 int SSL_SESSION_print(BIO *fp, const SSL_SESSION *ses);
1720 int SSL_SESSION_print_keylog(BIO *bp, const SSL_SESSION *x);
1721 int SSL_SESSION_up_ref(SSL_SESSION *ses);
1722 void SSL_SESSION_free(SSL_SESSION *ses);
1723 __owur int i2d_SSL_SESSION(const SSL_SESSION *in, unsigned char **pp);
1724 __owur int SSL_set_session(SSL *to, SSL_SESSION *session);
1725 int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
1726 int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
1727 __owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
1728 __owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
1729 __owur int SSL_has_matching_session_id(const SSL *s,
1730                                        const unsigned char *id,
1731                                        unsigned int id_len);
1732 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
1733                              long length);
1734
1735 # ifdef OPENSSL_X509_H
1736 __owur X509 *SSL_get0_peer_certificate(const SSL *s);
1737 __owur X509 *SSL_get1_peer_certificate(const SSL *s);
1738 /* Deprecated in 3.0.0 */
1739 #  ifndef OPENSSL_NO_DEPRECATED_3_0
1740 #   define SSL_get_peer_certificate SSL_get1_peer_certificate
1741 #  endif
1742 # endif
1743
1744 __owur STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);
1745
1746 __owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
1747 __owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
1748 __owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
1749 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
1750 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
1751 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1752                                       int (*cb) (X509_STORE_CTX *, void *),
1753                                       void *arg);
1754 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
1755                          void *arg);
1756 # ifndef OPENSSL_NO_DEPRECATED_3_0
1757 OSSL_DEPRECATEDIN_3_0
1758 __owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
1759 OSSL_DEPRECATEDIN_3_0
1760 __owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
1761                                           long len);
1762 # endif
1763 __owur int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
1764 __owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
1765                                        const unsigned char *d, long len);
1766 __owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
1767 __owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
1768                                         const unsigned char *d);
1769 __owur int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
1770                                     STACK_OF(X509) *chain, int override);
1771
1772 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
1773 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
1774 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx);
1775 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx);
1776 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb);
1777 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u);
1778 pem_password_cb *SSL_get_default_passwd_cb(SSL *s);
1779 void *SSL_get_default_passwd_cb_userdata(SSL *s);
1780
1781 __owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
1782 __owur int SSL_check_private_key(const SSL *ctx);
1783
1784 __owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
1785                                           const unsigned char *sid_ctx,
1786                                           unsigned int sid_ctx_len);
1787
1788 SSL *SSL_new(SSL_CTX *ctx);
1789 int SSL_up_ref(SSL *s);
1790 int SSL_is_dtls(const SSL *s);
1791 __owur int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
1792                                       unsigned int sid_ctx_len);
1793
1794 __owur int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
1795 __owur int SSL_set_purpose(SSL *ssl, int purpose);
1796 __owur int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
1797 __owur int SSL_set_trust(SSL *ssl, int trust);
1798
1799 __owur int SSL_set1_host(SSL *s, const char *hostname);
1800 __owur int SSL_add1_host(SSL *s, const char *hostname);
1801 __owur const char *SSL_get0_peername(SSL *s);
1802 void SSL_set_hostflags(SSL *s, unsigned int flags);
1803
1804 __owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
1805 __owur int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md,
1806                                   uint8_t mtype, uint8_t ord);
1807 __owur int SSL_dane_enable(SSL *s, const char *basedomain);
1808 __owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1809                              uint8_t mtype, const unsigned char *data, size_t dlen);
1810 __owur int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki);
1811 __owur int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1812                               uint8_t *mtype, const unsigned char **data,
1813                               size_t *dlen);
1814 /*
1815  * Bridge opacity barrier between libcrypt and libssl, also needed to support
1816  * offline testing in test/danetest.c
1817  */
1818 SSL_DANE *SSL_get0_dane(SSL *ssl);
1819 /*
1820  * DANE flags
1821  */
1822 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
1823 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
1824 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
1825 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
1826
1827 __owur int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
1828 __owur int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);
1829
1830 __owur X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
1831 __owur X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
1832
1833 # ifndef OPENSSL_NO_SRP
1834 #  ifndef OPENSSL_NO_DEPRECATED_3_0
1835 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name);
1836 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password);
1837 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
1838 OSSL_DEPRECATEDIN_3_0
1839 int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
1840                                         char *(*cb) (SSL *, void *));
1841 OSSL_DEPRECATEDIN_3_0
1842 int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
1843                                           int (*cb) (SSL *, void *));
1844 OSSL_DEPRECATEDIN_3_0
1845 int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
1846                                       int (*cb) (SSL *, int *, void *));
1847 OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
1848
1849 OSSL_DEPRECATEDIN_3_0
1850 int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
1851                              BIGNUM *sa, BIGNUM *v, char *info);
1852 OSSL_DEPRECATEDIN_3_0
1853 int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
1854                                 const char *grp);
1855
1856 OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_g(SSL *s);
1857 OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_N(SSL *s);
1858
1859 OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_username(SSL *s);
1860 OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_userinfo(SSL *s);
1861 #  endif
1862 # endif
1863
1864 /*
1865  * ClientHello callback and helpers.
1866  */
1867
1868 # define SSL_CLIENT_HELLO_SUCCESS 1
1869 # define SSL_CLIENT_HELLO_ERROR   0
1870 # define SSL_CLIENT_HELLO_RETRY   (-1)
1871
1872 typedef int (*SSL_client_hello_cb_fn) (SSL *s, int *al, void *arg);
1873 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
1874                                  void *arg);
1875 int SSL_client_hello_isv2(SSL *s);
1876 unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
1877 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out);
1878 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out);
1879 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out);
1880 size_t SSL_client_hello_get0_compression_methods(SSL *s,
1881                                                  const unsigned char **out);
1882 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen);
1883 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts,
1884                                          size_t *num_exts);
1885 int SSL_client_hello_get0_ext(SSL *s, unsigned int type,
1886                               const unsigned char **out, size_t *outlen);
1887
1888 void SSL_certs_clear(SSL *s);
1889 void SSL_free(SSL *ssl);
1890 # ifdef OSSL_ASYNC_FD
1891 /*
1892  * Windows application developer has to include windows.h to use these.
1893  */
1894 __owur int SSL_waiting_for_async(SSL *s);
1895 __owur int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds);
1896 __owur int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd,
1897                                      size_t *numaddfds, OSSL_ASYNC_FD *delfd,
1898                                      size_t *numdelfds);
1899 __owur int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback);
1900 __owur int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg);
1901 __owur int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback);
1902 __owur int SSL_set_async_callback_arg(SSL *s, void *arg);
1903 __owur int SSL_get_async_status(SSL *s, int *status);
1904
1905 # endif
1906 __owur int SSL_accept(SSL *ssl);
1907 __owur int SSL_stateless(SSL *s);
1908 __owur int SSL_connect(SSL *ssl);
1909 __owur int SSL_read(SSL *ssl, void *buf, int num);
1910 __owur int SSL_read_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1911
1912 # define SSL_READ_EARLY_DATA_ERROR   0
1913 # define SSL_READ_EARLY_DATA_SUCCESS 1
1914 # define SSL_READ_EARLY_DATA_FINISH  2
1915
1916 __owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
1917                                size_t *readbytes);
1918 __owur int SSL_peek(SSL *ssl, void *buf, int num);
1919 __owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1920 __owur ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size,
1921                                  int flags);
1922 __owur int SSL_write(SSL *ssl, const void *buf, int num);
1923 __owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
1924 __owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
1925                                 size_t *written);
1926 long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg);
1927 long SSL_callback_ctrl(SSL *, int, void (*)(void));
1928 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg);
1929 long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));
1930
1931 # define SSL_EARLY_DATA_NOT_SENT    0
1932 # define SSL_EARLY_DATA_REJECTED    1
1933 # define SSL_EARLY_DATA_ACCEPTED    2
1934
1935 __owur int SSL_get_early_data_status(const SSL *s);
1936
1937 __owur int SSL_get_error(const SSL *s, int ret_code);
1938 __owur const char *SSL_get_version(const SSL *s);
1939
1940 /* This sets the 'default' SSL version that SSL_new() will create */
1941 # ifndef OPENSSL_NO_DEPRECATED_3_0
1942 OSSL_DEPRECATEDIN_3_0
1943 __owur int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);
1944 # endif
1945
1946 # ifndef OPENSSL_NO_SSL3_METHOD
1947 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1948 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_method(void); /* SSLv3 */
1949 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_server_method(void);
1950 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_client_method(void);
1951 #  endif
1952 # endif
1953
1954 #define SSLv23_method           TLS_method
1955 #define SSLv23_server_method    TLS_server_method
1956 #define SSLv23_client_method    TLS_client_method
1957
1958 /* Negotiate highest available SSL/TLS version */
1959 __owur const SSL_METHOD *TLS_method(void);
1960 __owur const SSL_METHOD *TLS_server_method(void);
1961 __owur const SSL_METHOD *TLS_client_method(void);
1962
1963 # ifndef OPENSSL_NO_TLS1_METHOD
1964 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1965 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_method(void); /* TLSv1.0 */
1966 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_server_method(void);
1967 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_client_method(void);
1968 #  endif
1969 # endif
1970
1971 # ifndef OPENSSL_NO_TLS1_1_METHOD
1972 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1973 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_method(void); /* TLSv1.1 */
1974 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_server_method(void);
1975 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_client_method(void);
1976 #  endif
1977 # endif
1978
1979 # ifndef OPENSSL_NO_TLS1_2_METHOD
1980 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1981 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_method(void); /* TLSv1.2 */
1982 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_server_method(void);
1983 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_client_method(void);
1984 #  endif
1985 # endif
1986
1987 # ifndef OPENSSL_NO_DTLS1_METHOD
1988 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1989 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_method(void); /* DTLSv1.0 */
1990 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_server_method(void);
1991 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_client_method(void);
1992 #  endif
1993 # endif
1994
1995 # ifndef OPENSSL_NO_DTLS1_2_METHOD
1996 /* DTLSv1.2 */
1997 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
1998 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_method(void);
1999 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_server_method(void);
2000 OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_client_method(void);
2001 #  endif
2002 # endif
2003
2004 __owur const SSL_METHOD *DTLS_method(void); /* DTLS 1.0 and 1.2 */
2005 __owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
2006 __owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
2007
2008 __owur size_t DTLS_get_data_mtu(const SSL *s);
2009
2010 __owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
2011 __owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
2012 __owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
2013 __owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
2014
2015 __owur int SSL_do_handshake(SSL *s);
2016 int SSL_key_update(SSL *s, int updatetype);
2017 int SSL_get_key_update_type(const SSL *s);
2018 int SSL_renegotiate(SSL *s);
2019 int SSL_renegotiate_abbreviated(SSL *s);
2020 __owur int SSL_renegotiate_pending(const SSL *s);
2021 int SSL_new_session_ticket(SSL *s);
2022 int SSL_shutdown(SSL *s);
2023 __owur int SSL_verify_client_post_handshake(SSL *s);
2024 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val);
2025 void SSL_set_post_handshake_auth(SSL *s, int val);
2026
2027 __owur const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
2028 __owur const SSL_METHOD *SSL_get_ssl_method(const SSL *s);
2029 __owur int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
2030 __owur const char *SSL_alert_type_string_long(int value);
2031 __owur const char *SSL_alert_type_string(int value);
2032 __owur const char *SSL_alert_desc_string_long(int value);
2033 __owur const char *SSL_alert_desc_string(int value);
2034
2035 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
2036 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
2037 __owur const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
2038 __owur const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
2039 __owur int SSL_add1_to_CA_list(SSL *ssl, const X509 *x);
2040 __owur int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x);
2041 __owur const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
2042
2043 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
2044 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
2045 __owur STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
2046 __owur STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
2047 __owur int SSL_add_client_CA(SSL *ssl, X509 *x);
2048 __owur int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);
2049
2050 void SSL_set_connect_state(SSL *s);
2051 void SSL_set_accept_state(SSL *s);
2052
2053 __owur long SSL_get_default_timeout(const SSL *s);
2054
2055 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2056 #  define SSL_library_init() OPENSSL_init_ssl(0, NULL)
2057 # endif
2058
2059 __owur char *SSL_CIPHER_description(const SSL_CIPHER *, char *buf, int size);
2060 __owur STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk);
2061
2062 __owur SSL *SSL_dup(SSL *ssl);
2063
2064 __owur X509 *SSL_get_certificate(const SSL *ssl);
2065 /*
2066  * EVP_PKEY
2067  */
2068 struct evp_pkey_st *SSL_get_privatekey(const SSL *ssl);
2069
2070 __owur X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
2071 __owur EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
2072
2073 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
2074 __owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
2075 void SSL_set_quiet_shutdown(SSL *ssl, int mode);
2076 __owur int SSL_get_quiet_shutdown(const SSL *ssl);
2077 void SSL_set_shutdown(SSL *ssl, int mode);
2078 __owur int SSL_get_shutdown(const SSL *ssl);
2079 __owur int SSL_version(const SSL *ssl);
2080 __owur int SSL_client_version(const SSL *s);
2081 __owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
2082 __owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
2083 __owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
2084 __owur int SSL_CTX_set_default_verify_store(SSL_CTX *ctx);
2085 __owur int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile);
2086 __owur int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath);
2087 __owur int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore);
2088 __owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
2089                                                         const char *CAfile,
2090                                                         const char *CApath);
2091 # define SSL_get0_session SSL_get_session/* just peek at pointer */
2092 __owur SSL_SESSION *SSL_get_session(const SSL *ssl);
2093 __owur SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
2094 __owur SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
2095 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
2096 void SSL_set_info_callback(SSL *ssl,
2097                            void (*cb) (const SSL *ssl, int type, int val));
2098 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL *ssl, int type,
2099                                                int val);
2100 __owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
2101
2102 void SSL_set_verify_result(SSL *ssl, long v);
2103 __owur long SSL_get_verify_result(const SSL *ssl);
2104 __owur STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s);
2105
2106 __owur size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
2107                                     size_t outlen);
2108 __owur size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
2109                                     size_t outlen);
2110 __owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
2111                                          unsigned char *out, size_t outlen);
2112 __owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
2113                                        const unsigned char *in, size_t len);
2114 uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
2115
2116 #define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
2117     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
2118 __owur int SSL_set_ex_data(SSL *ssl, int idx, void *data);
2119 void *SSL_get_ex_data(const SSL *ssl, int idx);
2120 #define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
2121     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
2122 __owur int SSL_SESSION_set_ex_data(SSL_SESSION *ss, int idx, void *data);
2123 void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss, int idx);
2124 #define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
2125     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
2126 __owur int SSL_CTX_set_ex_data(SSL_CTX *ssl, int idx, void *data);
2127 void *SSL_CTX_get_ex_data(const SSL_CTX *ssl, int idx);
2128
2129 __owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
2130
2131 # define SSL_CTX_sess_set_cache_size(ctx,t) \
2132         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
2133 # define SSL_CTX_sess_get_cache_size(ctx) \
2134         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
2135 # define SSL_CTX_set_session_cache_mode(ctx,m) \
2136         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
2137 # define SSL_CTX_get_session_cache_mode(ctx) \
2138         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
2139
2140 # define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
2141 # define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
2142 # define SSL_CTX_get_read_ahead(ctx) \
2143         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
2144 # define SSL_CTX_set_read_ahead(ctx,m) \
2145         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
2146 # define SSL_CTX_get_max_cert_list(ctx) \
2147         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2148 # define SSL_CTX_set_max_cert_list(ctx,m) \
2149         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2150 # define SSL_get_max_cert_list(ssl) \
2151         SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2152 # define SSL_set_max_cert_list(ssl,m) \
2153         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2154
2155 # define SSL_CTX_set_max_send_fragment(ctx,m) \
2156         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2157 # define SSL_set_max_send_fragment(ssl,m) \
2158         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2159 # define SSL_CTX_set_split_send_fragment(ctx,m) \
2160         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2161 # define SSL_set_split_send_fragment(ssl,m) \
2162         SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2163 # define SSL_CTX_set_max_pipelines(ctx,m) \
2164         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2165 # define SSL_set_max_pipelines(ssl,m) \
2166         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2167 # define SSL_set_retry_verify(ssl) \
2168         (SSL_ctrl(ssl,SSL_CTRL_SET_RETRY_VERIFY,0,NULL) > 0)
2169
2170 void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
2171 void SSL_set_default_read_buffer_len(SSL *s, size_t len);
2172
2173 # ifndef OPENSSL_NO_DH
2174 #  ifndef OPENSSL_NO_DEPRECATED_3_0
2175 /* NB: the |keylength| is only applicable when is_export is true */
2176 OSSL_DEPRECATEDIN_3_0
2177 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
2178                                  DH *(*dh) (SSL *ssl, int is_export,
2179                                             int keylength));
2180 OSSL_DEPRECATEDIN_3_0
2181 void SSL_set_tmp_dh_callback(SSL *ssl,
2182                              DH *(*dh) (SSL *ssl, int is_export,
2183                                         int keylength));
2184 #  endif
2185 # endif
2186
2187 __owur const COMP_METHOD *SSL_get_current_compression(const SSL *s);
2188 __owur const COMP_METHOD *SSL_get_current_expansion(const SSL *s);
2189 __owur const char *SSL_COMP_get_name(const COMP_METHOD *comp);
2190 __owur const char *SSL_COMP_get0_name(const SSL_COMP *comp);
2191 __owur int SSL_COMP_get_id(const SSL_COMP *comp);
2192 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
2193 __owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
2194                                                              *meths);
2195 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2196 #  define SSL_COMP_free_compression_methods() while(0) continue
2197 # endif
2198 __owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
2199
2200 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);
2201 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
2202 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
2203 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
2204                              int isv2format, STACK_OF(SSL_CIPHER) **sk,
2205                              STACK_OF(SSL_CIPHER) **scsvs);
2206
2207 /* TLS extensions functions */
2208 __owur int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);
2209
2210 __owur int SSL_set_session_ticket_ext_cb(SSL *s,
2211                                          tls_session_ticket_ext_cb_fn cb,
2212                                          void *arg);
2213
2214 /* Pre-shared secret session resumption functions */
2215 __owur int SSL_set_session_secret_cb(SSL *s,
2216                                      tls_session_secret_cb_fn session_secret_cb,
2217                                      void *arg);
2218
2219 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
2220                                                 int (*cb) (SSL *ssl,
2221                                                            int
2222                                                            is_forward_secure));
2223
2224 void SSL_set_not_resumable_session_callback(SSL *ssl,
2225                                             int (*cb) (SSL *ssl,
2226                                                        int is_forward_secure));
2227
2228 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
2229                                          size_t (*cb) (SSL *ssl, int type,
2230                                                        size_t len, void *arg));
2231 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
2232 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
2233 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
2234
2235 int SSL_set_record_padding_callback(SSL *ssl,
2236                                     size_t (*cb) (SSL *ssl, int type,
2237                                                   size_t len, void *arg));
2238 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);
2239 void *SSL_get_record_padding_callback_arg(const SSL *ssl);
2240 int SSL_set_block_padding(SSL *ssl, size_t block_size);
2241
2242 int SSL_set_num_tickets(SSL *s, size_t num_tickets);
2243 size_t SSL_get_num_tickets(const SSL *s);
2244 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
2245 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
2246
2247 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
2248 #  define SSL_cache_hit(s) SSL_session_reused(s)
2249 # endif
2250
2251 __owur int SSL_session_reused(const SSL *s);
2252 __owur int SSL_is_server(const SSL *s);
2253
2254 __owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
2255 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
2256 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
2257 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
2258 __owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
2259                                              unsigned int flags);
2260 __owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);
2261
2262 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
2263 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);
2264
2265 __owur int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
2266 __owur int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);
2267 __owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd);
2268
2269 void SSL_add_ssl_module(void);
2270 int SSL_config(SSL *s, const char *name);
2271 int SSL_CTX_config(SSL_CTX *ctx, const char *name);
2272
2273 # ifndef OPENSSL_NO_SSL_TRACE
2274 void SSL_trace(int write_p, int version, int content_type,
2275                const void *buf, size_t len, SSL *ssl, void *arg);
2276 # endif
2277
2278 # ifndef OPENSSL_NO_SOCK
2279 int DTLSv1_listen(SSL *s, BIO_ADDR *client);
2280 # endif
2281
2282 # ifndef OPENSSL_NO_CT
2283
2284 /*
2285  * A callback for verifying that the received SCTs are sufficient.
2286  * Expected to return 1 if they are sufficient, otherwise 0.
2287  * May return a negative integer if an error occurs.
2288  * A connection should be aborted if the SCTs are deemed insufficient.
2289  */
2290 typedef int (*ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
2291                                     const STACK_OF(SCT) *scts, void *arg);
2292
2293 /*
2294  * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
2295  * the received SCTs.
2296  * If the callback returns a non-positive result, the connection is terminated.
2297  * Call this function before beginning a handshake.
2298  * If a NULL |callback| is provided, SCT validation is disabled.
2299  * |arg| is arbitrary userdata that will be passed to the callback whenever it
2300  * is invoked. Ownership of |arg| remains with the caller.
2301  *
2302  * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
2303  *       will be requested.
2304  */
2305 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
2306                                    void *arg);
2307 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
2308                                        ssl_ct_validation_cb callback,
2309                                        void *arg);
2310 #define SSL_disable_ct(s) \
2311         ((void) SSL_set_validation_callback((s), NULL, NULL))
2312 #define SSL_CTX_disable_ct(ctx) \
2313         ((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
2314
2315 /*
2316  * The validation type enumerates the available behaviours of the built-in SSL
2317  * CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
2318  * The underlying callback is a static function in libssl.
2319  */
2320 enum {
2321     SSL_CT_VALIDATION_PERMISSIVE = 0,
2322     SSL_CT_VALIDATION_STRICT
2323 };
2324
2325 /*
2326  * Enable CT by setting up a callback that implements one of the built-in
2327  * validation variants.  The SSL_CT_VALIDATION_PERMISSIVE variant always
2328  * continues the handshake, the application can make appropriate decisions at
2329  * handshake completion.  The SSL_CT_VALIDATION_STRICT variant requires at
2330  * least one valid SCT, or else handshake termination will be requested.  The
2331  * handshake may continue anyway if SSL_VERIFY_NONE is in effect.
2332  */
2333 int SSL_enable_ct(SSL *s, int validation_mode);
2334 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
2335
2336 /*
2337  * Report whether a non-NULL callback is enabled.
2338  */
2339 int SSL_ct_is_enabled(const SSL *s);
2340 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
2341
2342 /* Gets the SCTs received from a connection */
2343 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
2344
2345 /*
2346  * Loads the CT log list from the default location.
2347  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2348  * the log information loaded from this file will be appended to the
2349  * CTLOG_STORE.
2350  * Returns 1 on success, 0 otherwise.
2351  */
2352 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
2353
2354 /*
2355  * Loads the CT log list from the specified file path.
2356  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2357  * the log information loaded from this file will be appended to the
2358  * CTLOG_STORE.
2359  * Returns 1 on success, 0 otherwise.
2360  */
2361 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
2362
2363 /*
2364  * Sets the CT log list used by all SSL connections created from this SSL_CTX.
2365  * Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
2366  */
2367 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs);
2368
2369 /*
2370  * Gets the CT log list used by all SSL connections created from this SSL_CTX.
2371  * This will be NULL unless one of the following functions has been called:
2372  * - SSL_CTX_set_default_ctlog_list_file
2373  * - SSL_CTX_set_ctlog_list_file
2374  * - SSL_CTX_set_ctlog_store
2375  */
2376 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx);
2377
2378 # endif /* OPENSSL_NO_CT */
2379
2380 /* What the "other" parameter contains in security callback */
2381 /* Mask for type */
2382 # define SSL_SECOP_OTHER_TYPE    0xffff0000
2383 # define SSL_SECOP_OTHER_NONE    0
2384 # define SSL_SECOP_OTHER_CIPHER  (1 << 16)
2385 # define SSL_SECOP_OTHER_CURVE   (2 << 16)
2386 # define SSL_SECOP_OTHER_DH      (3 << 16)
2387 # define SSL_SECOP_OTHER_PKEY    (4 << 16)
2388 # define SSL_SECOP_OTHER_SIGALG  (5 << 16)
2389 # define SSL_SECOP_OTHER_CERT    (6 << 16)
2390
2391 /* Indicated operation refers to peer key or certificate */
2392 # define SSL_SECOP_PEER          0x1000
2393
2394 /* Values for "op" parameter in security callback */
2395
2396 /* Called to filter ciphers */
2397 /* Ciphers client supports */
2398 # define SSL_SECOP_CIPHER_SUPPORTED      (1 | SSL_SECOP_OTHER_CIPHER)
2399 /* Cipher shared by client/server */
2400 # define SSL_SECOP_CIPHER_SHARED         (2 | SSL_SECOP_OTHER_CIPHER)
2401 /* Sanity check of cipher server selects */
2402 # define SSL_SECOP_CIPHER_CHECK          (3 | SSL_SECOP_OTHER_CIPHER)
2403 /* Curves supported by client */
2404 # define SSL_SECOP_CURVE_SUPPORTED       (4 | SSL_SECOP_OTHER_CURVE)
2405 /* Curves shared by client/server */
2406 # define SSL_SECOP_CURVE_SHARED          (5 | SSL_SECOP_OTHER_CURVE)
2407 /* Sanity check of curve server selects */
2408 # define SSL_SECOP_CURVE_CHECK           (6 | SSL_SECOP_OTHER_CURVE)
2409 /* Temporary DH key */
2410 # define SSL_SECOP_TMP_DH                (7 | SSL_SECOP_OTHER_PKEY)
2411 /* SSL/TLS version */
2412 # define SSL_SECOP_VERSION               (9 | SSL_SECOP_OTHER_NONE)
2413 /* Session tickets */
2414 # define SSL_SECOP_TICKET                (10 | SSL_SECOP_OTHER_NONE)
2415 /* Supported signature algorithms sent to peer */
2416 # define SSL_SECOP_SIGALG_SUPPORTED      (11 | SSL_SECOP_OTHER_SIGALG)
2417 /* Shared signature algorithm */
2418 # define SSL_SECOP_SIGALG_SHARED         (12 | SSL_SECOP_OTHER_SIGALG)
2419 /* Sanity check signature algorithm allowed */
2420 # define SSL_SECOP_SIGALG_CHECK          (13 | SSL_SECOP_OTHER_SIGALG)
2421 /* Used to get mask of supported public key signature algorithms */
2422 # define SSL_SECOP_SIGALG_MASK           (14 | SSL_SECOP_OTHER_SIGALG)
2423 /* Use to see if compression is allowed */
2424 # define SSL_SECOP_COMPRESSION           (15 | SSL_SECOP_OTHER_NONE)
2425 /* EE key in certificate */
2426 # define SSL_SECOP_EE_KEY                (16 | SSL_SECOP_OTHER_CERT)
2427 /* CA key in certificate */
2428 # define SSL_SECOP_CA_KEY                (17 | SSL_SECOP_OTHER_CERT)
2429 /* CA digest algorithm in certificate */
2430 # define SSL_SECOP_CA_MD                 (18 | SSL_SECOP_OTHER_CERT)
2431 /* Peer EE key in certificate */
2432 # define SSL_SECOP_PEER_EE_KEY           (SSL_SECOP_EE_KEY | SSL_SECOP_PEER)
2433 /* Peer CA key in certificate */
2434 # define SSL_SECOP_PEER_CA_KEY           (SSL_SECOP_CA_KEY | SSL_SECOP_PEER)
2435 /* Peer CA digest algorithm in certificate */
2436 # define SSL_SECOP_PEER_CA_MD            (SSL_SECOP_CA_MD | SSL_SECOP_PEER)
2437
2438 void SSL_set_security_level(SSL *s, int level);
2439 __owur int SSL_get_security_level(const SSL *s);
2440 void SSL_set_security_callback(SSL *s,
2441                                int (*cb) (const SSL *s, const SSL_CTX *ctx,
2442                                           int op, int bits, int nid,
2443                                           void *other, void *ex));
2444 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
2445                                                 const SSL_CTX *ctx, int op,
2446                                                 int bits, int nid, void *other,
2447                                                 void *ex);
2448 void SSL_set0_security_ex_data(SSL *s, void *ex);
2449 __owur void *SSL_get0_security_ex_data(const SSL *s);
2450
2451 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
2452 __owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
2453 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
2454                                    int (*cb) (const SSL *s, const SSL_CTX *ctx,
2455                                               int op, int bits, int nid,
2456                                               void *other, void *ex));
2457 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
2458                                                           const SSL_CTX *ctx,
2459                                                           int op, int bits,
2460                                                           int nid,
2461                                                           void *other,
2462                                                           void *ex);
2463 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex);
2464 __owur void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx);
2465
2466 /* OPENSSL_INIT flag 0x010000 reserved for internal use */
2467 # define OPENSSL_INIT_NO_LOAD_SSL_STRINGS    0x00100000L
2468 # define OPENSSL_INIT_LOAD_SSL_STRINGS       0x00200000L
2469
2470 # define OPENSSL_INIT_SSL_DEFAULT \
2471         (OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
2472
2473 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
2474
2475 # ifndef OPENSSL_NO_UNIT_TEST
2476 __owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
2477 # endif
2478
2479 __owur int SSL_free_buffers(SSL *ssl);
2480 __owur int SSL_alloc_buffers(SSL *ssl);
2481
2482 /* Status codes passed to the decrypt session ticket callback. Some of these
2483  * are for internal use only and are never passed to the callback. */
2484 typedef int SSL_TICKET_STATUS;
2485
2486 /* Support for ticket appdata */
2487 /* fatal error, malloc failure */
2488 # define SSL_TICKET_FATAL_ERR_MALLOC 0
2489 /* fatal error, either from parsing or decrypting the ticket */
2490 # define SSL_TICKET_FATAL_ERR_OTHER  1
2491 /* No ticket present */
2492 # define SSL_TICKET_NONE             2
2493 /* Empty ticket present */
2494 # define SSL_TICKET_EMPTY            3
2495 /* the ticket couldn't be decrypted */
2496 # define SSL_TICKET_NO_DECRYPT       4
2497 /* a ticket was successfully decrypted */
2498 # define SSL_TICKET_SUCCESS          5
2499 /* same as above but the ticket needs to be renewed */
2500 # define SSL_TICKET_SUCCESS_RENEW    6
2501
2502 /* Return codes for the decrypt session ticket callback */
2503 typedef int SSL_TICKET_RETURN;
2504
2505 /* An error occurred */
2506 #define SSL_TICKET_RETURN_ABORT             0
2507 /* Do not use the ticket, do not send a renewed ticket to the client */
2508 #define SSL_TICKET_RETURN_IGNORE            1
2509 /* Do not use the ticket, send a renewed ticket to the client */
2510 #define SSL_TICKET_RETURN_IGNORE_RENEW      2
2511 /* Use the ticket, do not send a renewed ticket to the client */
2512 #define SSL_TICKET_RETURN_USE               3
2513 /* Use the ticket, send a renewed ticket to the client */
2514 #define SSL_TICKET_RETURN_USE_RENEW         4
2515
2516 typedef int (*SSL_CTX_generate_session_ticket_fn)(SSL *s, void *arg);
2517 typedef SSL_TICKET_RETURN (*SSL_CTX_decrypt_session_ticket_fn)(SSL *s, SSL_SESSION *ss,
2518                                                                const unsigned char *keyname,
2519                                                                size_t keyname_length,
2520                                                                SSL_TICKET_STATUS status,
2521                                                                void *arg);
2522 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
2523                                   SSL_CTX_generate_session_ticket_fn gen_cb,
2524                                   SSL_CTX_decrypt_session_ticket_fn dec_cb,
2525                                   void *arg);
2526 int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len);
2527 int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len);
2528
2529 typedef unsigned int (*DTLS_timer_cb)(SSL *s, unsigned int timer_us);
2530
2531 void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
2532
2533
2534 typedef int (*SSL_allow_early_data_cb_fn)(SSL *s, void *arg);
2535 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
2536                                      SSL_allow_early_data_cb_fn cb,
2537                                      void *arg);
2538 void SSL_set_allow_early_data_cb(SSL *s,
2539                                  SSL_allow_early_data_cb_fn cb,
2540                                  void *arg);
2541
2542 /* store the default cipher strings inside the library */
2543 const char *OSSL_default_cipher_list(void);
2544 const char *OSSL_default_ciphersuites(void);
2545
2546 /* RFC8879 Certificate compression APIs */
2547
2548 int SSL_CTX_compress_certs(SSL_CTX *ctx, int alg);
2549 int SSL_compress_certs(SSL *ssl, int alg);
2550
2551 int SSL_CTX_set1_cert_comp_preference(SSL_CTX *ctx, int *algs, size_t len);
2552 int SSL_set1_cert_comp_preference(SSL *ssl, int *algs, size_t len);
2553
2554 int SSL_CTX_set1_compressed_cert(SSL_CTX *ctx, int algorithm, unsigned char *comp_data,
2555                                 size_t comp_length, size_t orig_length);
2556 int SSL_set1_compressed_cert(SSL *ssl, int algorithm, unsigned char *comp_data,
2557                             size_t comp_length, size_t orig_length);
2558 size_t SSL_CTX_get1_compressed_cert(SSL_CTX *ctx, int alg, unsigned char **data, size_t *orig_len);
2559 size_t SSL_get1_compressed_cert(SSL *ssl, int alg, unsigned char **data, size_t *orig_len);
2560
2561
2562 # ifdef  __cplusplus
2563 }
2564 # endif
2565 #endif