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