Home | History | Annotate | Line # | Download | only in openssl
      1 /*
      2  * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
      3  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
      4  * Copyright 2005 Nokia. All rights reserved.
      5  *
      6  * Licensed under the OpenSSL license (the "License").  You may not use
      7  * this file except in compliance with the License.  You can obtain a copy
      8  * in the file LICENSE in the source distribution or at
      9  * https://www.openssl.org/source/license.html
     10  */
     11 
     12 #ifndef HEADER_SSL_H
     13 # define HEADER_SSL_H
     14 
     15 # include <openssl/e_os2.h>
     16 # include <openssl/opensslconf.h>
     17 # include <openssl/comp.h>
     18 # include <openssl/bio.h>
     19 # if OPENSSL_API_COMPAT < 0x10100000L
     20 #  include <openssl/x509.h>
     21 #  include <openssl/crypto.h>
     22 #  include <openssl/buffer.h>
     23 # endif
     24 # include <openssl/lhash.h>
     25 # include <openssl/pem.h>
     26 # include <openssl/hmac.h>
     27 # include <openssl/async.h>
     28 
     29 # include <openssl/safestack.h>
     30 # include <openssl/symhacks.h>
     31 # include <openssl/ct.h>
     32 # include <openssl/sslerr.h>
     33 
     34 #ifdef  __cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 /* OpenSSL version number for ASN.1 encoding of the session information */
     39 /*-
     40  * Version 0 - initial version
     41  * Version 1 - added the optional peer certificate
     42  */
     43 # define SSL_SESSION_ASN1_VERSION 0x0001
     44 
     45 # define SSL_MAX_SSL_SESSION_ID_LENGTH           32
     46 # define SSL_MAX_SID_CTX_LENGTH                  32
     47 
     48 # define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES     (512/8)
     49 # define SSL_MAX_KEY_ARG_LENGTH                  8
     50 # define SSL_MAX_MASTER_KEY_LENGTH               48
     51 
     52 /* The maximum number of encrypt/decrypt pipelines we can support */
     53 # define SSL_MAX_PIPELINES  32
     54 
     55 /* text strings for the ciphers */
     56 
     57 /* These are used to specify which ciphers to use and not to use */
     58 
     59 # define SSL_TXT_LOW             "LOW"
     60 # define SSL_TXT_MEDIUM          "MEDIUM"
     61 # define SSL_TXT_HIGH            "HIGH"
     62 # define SSL_TXT_FIPS            "FIPS"
     63 
     64 # define SSL_TXT_aNULL           "aNULL"
     65 # define SSL_TXT_eNULL           "eNULL"
     66 # define SSL_TXT_NULL            "NULL"
     67 
     68 # define SSL_TXT_kRSA            "kRSA"
     69 # define SSL_TXT_kDHr            "kDHr"/* this cipher class has been removed */
     70 # define SSL_TXT_kDHd            "kDHd"/* this cipher class has been removed */
     71 # define SSL_TXT_kDH             "kDH"/* this cipher class has been removed */
     72 # define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
     73 # define SSL_TXT_kDHE            "kDHE"
     74 # define SSL_TXT_kECDHr          "kECDHr"/* this cipher class has been removed */
     75 # define SSL_TXT_kECDHe          "kECDHe"/* this cipher class has been removed */
     76 # define SSL_TXT_kECDH           "kECDH"/* this cipher class has been removed */
     77 # define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
     78 # define SSL_TXT_kECDHE          "kECDHE"
     79 # define SSL_TXT_kPSK            "kPSK"
     80 # define SSL_TXT_kRSAPSK         "kRSAPSK"
     81 # define SSL_TXT_kECDHEPSK       "kECDHEPSK"
     82 # define SSL_TXT_kDHEPSK         "kDHEPSK"
     83 # define SSL_TXT_kGOST           "kGOST"
     84 # define SSL_TXT_kSRP            "kSRP"
     85 
     86 # define SSL_TXT_aRSA            "aRSA"
     87 # define SSL_TXT_aDSS            "aDSS"
     88 # define SSL_TXT_aDH             "aDH"/* this cipher class has been removed */
     89 # define SSL_TXT_aECDH           "aECDH"/* this cipher class has been removed */
     90 # define SSL_TXT_aECDSA          "aECDSA"
     91 # define SSL_TXT_aPSK            "aPSK"
     92 # define SSL_TXT_aGOST94         "aGOST94"
     93 # define SSL_TXT_aGOST01         "aGOST01"
     94 # define SSL_TXT_aGOST12         "aGOST12"
     95 # define SSL_TXT_aGOST           "aGOST"
     96 # define SSL_TXT_aSRP            "aSRP"
     97 
     98 # define SSL_TXT_DSS             "DSS"
     99 # define SSL_TXT_DH              "DH"
    100 # define SSL_TXT_DHE             "DHE"/* same as "kDHE:-ADH" */
    101 # define SSL_TXT_EDH             "EDH"/* alias for DHE */
    102 # define SSL_TXT_ADH             "ADH"
    103 # define SSL_TXT_RSA             "RSA"
    104 # define SSL_TXT_ECDH            "ECDH"
    105 # define SSL_TXT_EECDH           "EECDH"/* alias for ECDHE" */
    106 # define SSL_TXT_ECDHE           "ECDHE"/* same as "kECDHE:-AECDH" */
    107 # define SSL_TXT_AECDH           "AECDH"
    108 # define SSL_TXT_ECDSA           "ECDSA"
    109 # define SSL_TXT_PSK             "PSK"
    110 # define SSL_TXT_SRP             "SRP"
    111 
    112 # define SSL_TXT_DES             "DES"
    113 # define SSL_TXT_3DES            "3DES"
    114 # define SSL_TXT_RC4             "RC4"
    115 # define SSL_TXT_RC2             "RC2"
    116 # define SSL_TXT_IDEA            "IDEA"
    117 # define SSL_TXT_SEED            "SEED"
    118 # define SSL_TXT_AES128          "AES128"
    119 # define SSL_TXT_AES256          "AES256"
    120 # define SSL_TXT_AES             "AES"
    121 # define SSL_TXT_AES_GCM         "AESGCM"
    122 # define SSL_TXT_AES_CCM         "AESCCM"
    123 # define SSL_TXT_AES_CCM_8       "AESCCM8"
    124 # define SSL_TXT_CAMELLIA128     "CAMELLIA128"
    125 # define SSL_TXT_CAMELLIA256     "CAMELLIA256"
    126 # define SSL_TXT_CAMELLIA        "CAMELLIA"
    127 # define SSL_TXT_CHACHA20        "CHACHA20"
    128 # define SSL_TXT_GOST            "GOST89"
    129 # define SSL_TXT_ARIA            "ARIA"
    130 # define SSL_TXT_ARIA_GCM        "ARIAGCM"
    131 # define SSL_TXT_ARIA128         "ARIA128"
    132 # define SSL_TXT_ARIA256         "ARIA256"
    133 
    134 # define SSL_TXT_MD5             "MD5"
    135 # define SSL_TXT_SHA1            "SHA1"
    136 # define SSL_TXT_SHA             "SHA"/* same as "SHA1" */
    137 # define SSL_TXT_GOST94          "GOST94"
    138 # define SSL_TXT_GOST89MAC       "GOST89MAC"
    139 # define SSL_TXT_GOST12          "GOST12"
    140 # define SSL_TXT_GOST89MAC12     "GOST89MAC12"
    141 # define SSL_TXT_SHA256          "SHA256"
    142 # define SSL_TXT_SHA384          "SHA384"
    143 
    144 # define SSL_TXT_SSLV3           "SSLv3"
    145 # define SSL_TXT_TLSV1           "TLSv1"
    146 # define SSL_TXT_TLSV1_1         "TLSv1.1"
    147 # define SSL_TXT_TLSV1_2         "TLSv1.2"
    148 
    149 # define SSL_TXT_ALL             "ALL"
    150 
    151 /*-
    152  * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
    153  * ciphers normally not being used.
    154  * Example: "RC4" will activate all ciphers using RC4 including ciphers
    155  * without authentication, which would normally disabled by DEFAULT (due
    156  * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
    157  * will make sure that it is also disabled in the specific selection.
    158  * COMPLEMENTOF* identifiers are portable between version, as adjustments
    159  * to the default cipher setup will also be included here.
    160  *
    161  * COMPLEMENTOFDEFAULT does not experience the same special treatment that
    162  * DEFAULT gets, as only selection is being done and no sorting as needed
    163  * for DEFAULT.
    164  */
    165 # define SSL_TXT_CMPALL          "COMPLEMENTOFALL"
    166 # define SSL_TXT_CMPDEF          "COMPLEMENTOFDEFAULT"
    167 
    168 /*
    169  * The following cipher list is used by default. It also is substituted when
    170  * an application-defined cipher list string starts with 'DEFAULT'.
    171  * This applies to ciphersuites for TLSv1.2 and below.
    172  */
    173 # define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
    174 /* This is the default set of TLSv1.3 ciphersuites */
    175 # if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
    176 #  define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
    177                                    "TLS_CHACHA20_POLY1305_SHA256:" \
    178                                    "TLS_AES_128_GCM_SHA256"
    179 # else
    180 #  define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
    181                                    "TLS_AES_128_GCM_SHA256"
    182 #endif
    183 /*
    184  * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
    185  * starts with a reasonable order, and all we have to do for DEFAULT is
    186  * throwing out anonymous and unencrypted ciphersuites! (The latter are not
    187  * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
    188  */
    189 
    190 /* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
    191 # define SSL_SENT_SHUTDOWN       1
    192 # define SSL_RECEIVED_SHUTDOWN   2
    193 
    194 #ifdef __cplusplus
    195 }
    196 #endif
    197 
    198 #ifdef  __cplusplus
    199 extern "C" {
    200 #endif
    201 
    202 # define SSL_FILETYPE_ASN1       X509_FILETYPE_ASN1
    203 # define SSL_FILETYPE_PEM        X509_FILETYPE_PEM
    204 
    205 /*
    206  * This is needed to stop compilers complaining about the 'struct ssl_st *'
    207  * function parameters used to prototype callbacks in SSL_CTX.
    208  */
    209 typedef struct ssl_st *ssl_crock_st;
    210 typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
    211 typedef struct ssl_method_st SSL_METHOD;
    212 typedef struct ssl_cipher_st SSL_CIPHER;
    213 typedef struct ssl_session_st SSL_SESSION;
    214 typedef struct tls_sigalgs_st TLS_SIGALGS;
    215 typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
    216 typedef struct ssl_comp_st SSL_COMP;
    217 
    218 STACK_OF(SSL_CIPHER);
    219 STACK_OF(SSL_COMP);
    220 
    221 /* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
    222 typedef struct srtp_protection_profile_st {
    223     const char *name;
    224     unsigned long id;
    225 } SRTP_PROTECTION_PROFILE;
    226 
    227 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
    228 
    229 typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data,
    230                                             int len, void *arg);
    231 typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len,
    232                                         STACK_OF(SSL_CIPHER) *peer_ciphers,
    233                                         const SSL_CIPHER **cipher, void *arg);
    234 
    235 /* Extension context codes */
    236 /* This extension is only allowed in TLS */
    237 #define SSL_EXT_TLS_ONLY                        0x0001
    238 /* This extension is only allowed in DTLS */
    239 #define SSL_EXT_DTLS_ONLY                       0x0002
    240 /* Some extensions may be allowed in DTLS but we don't implement them for it */
    241 #define SSL_EXT_TLS_IMPLEMENTATION_ONLY         0x0004
    242 /* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
    243 #define SSL_EXT_SSL3_ALLOWED                    0x0008
    244 /* Extension is only defined for TLS1.2 and below */
    245 #define SSL_EXT_TLS1_2_AND_BELOW_ONLY           0x0010
    246 /* Extension is only defined for TLS1.3 and above */
    247 #define SSL_EXT_TLS1_3_ONLY                     0x0020
    248 /* Ignore this extension during parsing if we are resuming */
    249 #define SSL_EXT_IGNORE_ON_RESUMPTION            0x0040
    250 #define SSL_EXT_CLIENT_HELLO                    0x0080
    251 /* Really means TLS1.2 or below */
    252 #define SSL_EXT_TLS1_2_SERVER_HELLO             0x0100
    253 #define SSL_EXT_TLS1_3_SERVER_HELLO             0x0200
    254 #define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS     0x0400
    255 #define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST      0x0800
    256 #define SSL_EXT_TLS1_3_CERTIFICATE              0x1000
    257 #define SSL_EXT_TLS1_3_NEW_SESSION_TICKET       0x2000
    258 #define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST      0x4000
    259 
    260 /* Typedefs for handling custom extensions */
    261 
    262 typedef int (*custom_ext_add_cb)(SSL *s, unsigned int ext_type,
    263                                  const unsigned char **out, size_t *outlen,
    264                                  int *al, void *add_arg);
    265 
    266 typedef void (*custom_ext_free_cb)(SSL *s, unsigned int ext_type,
    267                                    const unsigned char *out, void *add_arg);
    268 
    269 typedef int (*custom_ext_parse_cb)(SSL *s, unsigned int ext_type,
    270                                    const unsigned char *in, size_t inlen,
    271                                    int *al, void *parse_arg);
    272 
    273 
    274 typedef int (*SSL_custom_ext_add_cb_ex)(SSL *s, unsigned int ext_type,
    275                                         unsigned int context,
    276                                         const unsigned char **out,
    277                                         size_t *outlen, X509 *x,
    278                                         size_t chainidx,
    279                                         int *al, void *add_arg);
    280 
    281 typedef void (*SSL_custom_ext_free_cb_ex)(SSL *s, unsigned int ext_type,
    282                                           unsigned int context,
    283                                           const unsigned char *out,
    284                                           void *add_arg);
    285 
    286 typedef int (*SSL_custom_ext_parse_cb_ex)(SSL *s, unsigned int ext_type,
    287                                           unsigned int context,
    288                                           const unsigned char *in,
    289                                           size_t inlen, X509 *x,
    290                                           size_t chainidx,
    291                                           int *al, void *parse_arg);
    292 
    293 /* Typedef for verification callback */
    294 typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
    295 
    296 /*
    297  * Some values are reserved until OpenSSL 1.2.0 because they were previously
    298  * included in SSL_OP_ALL in a 1.1.x release.
    299  *
    300  * Reserved value (until OpenSSL 1.2.0)                  0x00000001U
    301  * Reserved value (until OpenSSL 1.2.0)                  0x00000002U
    302  */
    303 /* Allow initial connection to servers that don't support RI */
    304 # define SSL_OP_LEGACY_SERVER_CONNECT                    0x00000004U
    305 
    306 /* Reserved value (until OpenSSL 1.2.0)                  0x00000008U */
    307 # define SSL_OP_TLSEXT_PADDING                           0x00000010U
    308 /* Reserved value (until OpenSSL 1.2.0)                  0x00000020U */
    309 # define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   0x00000040U
    310 /*
    311  * Reserved value (until OpenSSL 1.2.0)                  0x00000080U
    312  * Reserved value (until OpenSSL 1.2.0)                  0x00000100U
    313  * Reserved value (until OpenSSL 1.2.0)                  0x00000200U
    314  */
    315 
    316 /* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
    317 # define SSL_OP_ALLOW_NO_DHE_KEX                         0x00000400U
    318 
    319 /*
    320  * Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added in
    321  * OpenSSL 0.9.6d.  Usually (depending on the application protocol) the
    322  * workaround is not needed.  Unfortunately some broken SSL/TLS
    323  * implementations cannot handle it at all, which is why we include it in
    324  * SSL_OP_ALL. Added in 0.9.6e
    325  */
    326 # define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              0x00000800U
    327 
    328 /* DTLS options */
    329 # define SSL_OP_NO_QUERY_MTU                             0x00001000U
    330 /* Turn on Cookie Exchange (on relevant for servers) */
    331 # define SSL_OP_COOKIE_EXCHANGE                          0x00002000U
    332 /* Don't use RFC4507 ticket extension */
    333 # define SSL_OP_NO_TICKET                                0x00004000U
    334 # ifndef OPENSSL_NO_DTLS1_METHOD
    335 /* Use Cisco's "speshul" version of DTLS_BAD_VER
    336  * (only with deprecated DTLSv1_client_method())  */
    337 #  define SSL_OP_CISCO_ANYCONNECT                        0x00008000U
    338 # endif
    339 
    340 /* As server, disallow session resumption on renegotiation */
    341 # define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   0x00010000U
    342 /* Don't use compression even if supported */
    343 # define SSL_OP_NO_COMPRESSION                           0x00020000U
    344 /* Permit unsafe legacy renegotiation */
    345 # define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        0x00040000U
    346 /* Disable encrypt-then-mac */
    347 # define SSL_OP_NO_ENCRYPT_THEN_MAC                      0x00080000U
    348 
    349 /*
    350  * Enable TLSv1.3 Compatibility mode. This is on by default. A future version
    351  * of OpenSSL may have this disabled by default.
    352  */
    353 # define SSL_OP_ENABLE_MIDDLEBOX_COMPAT                  0x00100000U
    354 
    355 /* Prioritize Chacha20Poly1305 when client does.
    356  * Modifies SSL_OP_CIPHER_SERVER_PREFERENCE */
    357 # define SSL_OP_PRIORITIZE_CHACHA                        0x00200000U
    358 
    359 /*
    360  * Set on servers to choose the cipher according to the server's preferences
    361  */
    362 # define SSL_OP_CIPHER_SERVER_PREFERENCE                 0x00400000U
    363 /*
    364  * If set, a server will allow a client to issue a SSLv3.0 version number as
    365  * latest version supported in the premaster secret, even when TLSv1.0
    366  * (version 3.1) was announced in the client hello. Normally this is
    367  * forbidden to prevent version rollback attacks.
    368  */
    369 # define SSL_OP_TLS_ROLLBACK_BUG                         0x00800000U
    370 
    371 /*
    372  * Switches off automatic TLSv1.3 anti-replay protection for early data. This
    373  * is a server-side option only (no effect on the client).
    374  */
    375 # define SSL_OP_NO_ANTI_REPLAY                           0x01000000U
    376 
    377 # define SSL_OP_NO_SSLv3                                 0x02000000U
    378 # define SSL_OP_NO_TLSv1                                 0x04000000U
    379 # define SSL_OP_NO_TLSv1_2                               0x08000000U
    380 # define SSL_OP_NO_TLSv1_1                               0x10000000U
    381 # define SSL_OP_NO_TLSv1_3                               0x20000000U
    382 
    383 # define SSL_OP_NO_DTLSv1                                0x04000000U
    384 # define SSL_OP_NO_DTLSv1_2                              0x08000000U
    385 
    386 # define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv3|\
    387         SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2|SSL_OP_NO_TLSv1_3)
    388 # define SSL_OP_NO_DTLS_MASK (SSL_OP_NO_DTLSv1|SSL_OP_NO_DTLSv1_2)
    389 
    390 /* Disallow all renegotiation */
    391 # define SSL_OP_NO_RENEGOTIATION                         0x40000000U
    392 
    393 /*
    394  * Make server add server-hello extension from early version of cryptopro
    395  * draft, when GOST ciphersuite is negotiated. Required for interoperability
    396  * with CryptoPro CSP 3.x
    397  */
    398 # define SSL_OP_CRYPTOPRO_TLSEXT_BUG                     0x80000000U
    399 
    400 /*
    401  * SSL_OP_ALL: various bug workarounds that should be rather harmless.
    402  * This used to be 0x000FFFFFL before 0.9.7.
    403  * This used to be 0x80000BFFU before 1.1.1.
    404  */
    405 # define SSL_OP_ALL        (SSL_OP_CRYPTOPRO_TLSEXT_BUG|\
    406                             SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS|\
    407                             SSL_OP_LEGACY_SERVER_CONNECT|\
    408                             SSL_OP_TLSEXT_PADDING|\
    409                             SSL_OP_SAFARI_ECDHE_ECDSA_BUG)
    410 
    411 /* OBSOLETE OPTIONS: retained for compatibility */
    412 
    413 /* Removed from OpenSSL 1.1.0. Was 0x00000001L */
    414 /* Related to removed SSLv2. */
    415 # define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x0
    416 /* Removed from OpenSSL 1.1.0. Was 0x00000002L */
    417 /* Related to removed SSLv2. */
    418 # define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x0
    419 /* Removed from OpenSSL 0.9.8q and 1.0.0c. Was 0x00000008L */
    420 /* Dead forever, see CVE-2010-4180 */
    421 # define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x0
    422 /* Removed from OpenSSL 1.0.1h and 1.0.2. Was 0x00000010L */
    423 /* Refers to ancient SSLREF and SSLv2. */
    424 # define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG              0x0
    425 /* Removed from OpenSSL 1.1.0. Was 0x00000020 */
    426 # define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x0
    427 /* Removed from OpenSSL 0.9.7h and 0.9.8b. Was 0x00000040L */
    428 # define SSL_OP_MSIE_SSLV2_RSA_PADDING                   0x0
    429 /* Removed from OpenSSL 1.1.0. Was 0x00000080 */
    430 /* Ancient SSLeay version. */
    431 # define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x0
    432 /* Removed from OpenSSL 1.1.0. Was 0x00000100L */
    433 # define SSL_OP_TLS_D5_BUG                               0x0
    434 /* Removed from OpenSSL 1.1.0. Was 0x00000200L */
    435 # define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x0
    436 /* Removed from OpenSSL 1.1.0. Was 0x00080000L */
    437 # define SSL_OP_SINGLE_ECDH_USE                          0x0
    438 /* Removed from OpenSSL 1.1.0. Was 0x00100000L */
    439 # define SSL_OP_SINGLE_DH_USE                            0x0
    440 /* Removed from OpenSSL 1.0.1k and 1.0.2. Was 0x00200000L */
    441 # define SSL_OP_EPHEMERAL_RSA                            0x0
    442 /* Removed from OpenSSL 1.1.0. Was 0x01000000L */
    443 # define SSL_OP_NO_SSLv2                                 0x0
    444 /* Removed from OpenSSL 1.0.1. Was 0x08000000L */
    445 # define SSL_OP_PKCS1_CHECK_1                            0x0
    446 /* Removed from OpenSSL 1.0.1. Was 0x10000000L */
    447 # define SSL_OP_PKCS1_CHECK_2                            0x0
    448 /* Removed from OpenSSL 1.1.0. Was 0x20000000L */
    449 # define SSL_OP_NETSCAPE_CA_DN_BUG                       0x0
    450 /* Removed from OpenSSL 1.1.0. Was 0x40000000L */
    451 # define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x0
    452 
    453 /*
    454  * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
    455  * when just a single record has been written):
    456  */
    457 # define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001U
    458 /*
    459  * Make it possible to retry SSL_write() with changed buffer location (buffer
    460  * contents must stay the same!); this is not the default to avoid the
    461  * misconception that non-blocking SSL_write() behaves like non-blocking
    462  * write():
    463  */
    464 # define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
    465 /*
    466  * Never bother the application with retries if the transport is blocking:
    467  */
    468 # define SSL_MODE_AUTO_RETRY 0x00000004U
    469 /* Don't attempt to automatically build certificate chain */
    470 # define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
    471 /*
    472  * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
    473  * TLS only.) Released buffers are freed.
    474  */
    475 # define SSL_MODE_RELEASE_BUFFERS 0x00000010U
    476 /*
    477  * Send the current time in the Random fields of the ClientHello and
    478  * ServerHello records for compatibility with hypothetical implementations
    479  * that require it.
    480  */
    481 # define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
    482 # define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
    483 /*
    484  * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
    485  * that reconnect with a downgraded protocol version; see
    486  * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
    487  * application attempts a normal handshake. Only use this in explicit
    488  * fallback retries, following the guidance in
    489  * draft-ietf-tls-downgrade-scsv-00.
    490  */
    491 # define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
    492 /*
    493  * Support Asynchronous operation
    494  */
    495 # define SSL_MODE_ASYNC 0x00000100U
    496 
    497 /*
    498  * When using DTLS/SCTP, include the terminating zero in the label
    499  * used for computing the endpoint-pair shared secret. Required for
    500  * interoperability with implementations having this bug like these
    501  * older version of OpenSSL:
    502  * - OpenSSL 1.0.0 series
    503  * - OpenSSL 1.0.1 series
    504  * - OpenSSL 1.0.2 series
    505  * - OpenSSL 1.1.0 series
    506  * - OpenSSL 1.1.1 and 1.1.1a
    507  */
    508 # define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
    509 
    510 /* Cert related flags */
    511 /*
    512  * Many implementations ignore some aspects of the TLS standards such as
    513  * enforcing certificate chain algorithms. When this is set we enforce them.
    514  */
    515 # define SSL_CERT_FLAG_TLS_STRICT                0x00000001U
    516 
    517 /* Suite B modes, takes same values as certificate verify flags */
    518 # define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY       0x10000
    519 /* Suite B 192 bit only mode */
    520 # define SSL_CERT_FLAG_SUITEB_192_LOS            0x20000
    521 /* Suite B 128 bit mode allowing 192 bit algorithms */
    522 # define SSL_CERT_FLAG_SUITEB_128_LOS            0x30000
    523 
    524 /* Perform all sorts of protocol violations for testing purposes */
    525 # define SSL_CERT_FLAG_BROKEN_PROTOCOL           0x10000000
    526 
    527 /* Flags for building certificate chains */
    528 /* Treat any existing certificates as untrusted CAs */
    529 # define SSL_BUILD_CHAIN_FLAG_UNTRUSTED          0x1
    530 /* Don't include root CA in chain */
    531 # define SSL_BUILD_CHAIN_FLAG_NO_ROOT            0x2
    532 /* Just check certificates already there */
    533 # define SSL_BUILD_CHAIN_FLAG_CHECK              0x4
    534 /* Ignore verification errors */
    535 # define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR       0x8
    536 /* Clear verification errors from queue */
    537 # define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR        0x10
    538 
    539 /* Flags returned by SSL_check_chain */
    540 /* Certificate can be used with this session */
    541 # define CERT_PKEY_VALID         0x1
    542 /* Certificate can also be used for signing */
    543 # define CERT_PKEY_SIGN          0x2
    544 /* EE certificate signing algorithm OK */
    545 # define CERT_PKEY_EE_SIGNATURE  0x10
    546 /* CA signature algorithms OK */
    547 # define CERT_PKEY_CA_SIGNATURE  0x20
    548 /* EE certificate parameters OK */
    549 # define CERT_PKEY_EE_PARAM      0x40
    550 /* CA certificate parameters OK */
    551 # define CERT_PKEY_CA_PARAM      0x80
    552 /* Signing explicitly allowed as opposed to SHA1 fallback */
    553 # define CERT_PKEY_EXPLICIT_SIGN 0x100
    554 /* Client CA issuer names match (always set for server cert) */
    555 # define CERT_PKEY_ISSUER_NAME   0x200
    556 /* Cert type matches client types (always set for server cert) */
    557 # define CERT_PKEY_CERT_TYPE     0x400
    558 /* Cert chain suitable to Suite B */
    559 # define CERT_PKEY_SUITEB        0x800
    560 
    561 # define SSL_CONF_FLAG_CMDLINE           0x1
    562 # define SSL_CONF_FLAG_FILE              0x2
    563 # define SSL_CONF_FLAG_CLIENT            0x4
    564 # define SSL_CONF_FLAG_SERVER            0x8
    565 # define SSL_CONF_FLAG_SHOW_ERRORS       0x10
    566 # define SSL_CONF_FLAG_CERTIFICATE       0x20
    567 # define SSL_CONF_FLAG_REQUIRE_PRIVATE   0x40
    568 /* Configuration value types */
    569 # define SSL_CONF_TYPE_UNKNOWN           0x0
    570 # define SSL_CONF_TYPE_STRING            0x1
    571 # define SSL_CONF_TYPE_FILE              0x2
    572 # define SSL_CONF_TYPE_DIR               0x3
    573 # define SSL_CONF_TYPE_NONE              0x4
    574 
    575 /* Maximum length of the application-controlled segment of a a TLSv1.3 cookie */
    576 # define SSL_COOKIE_LENGTH                       4096
    577 
    578 /*
    579  * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
    580  * cannot be used to clear bits.
    581  */
    582 
    583 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx);
    584 unsigned long SSL_get_options(const SSL *s);
    585 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op);
    586 unsigned long SSL_clear_options(SSL *s, unsigned long op);
    587 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op);
    588 unsigned long SSL_set_options(SSL *s, unsigned long op);
    589 
    590 # define SSL_CTX_set_mode(ctx,op) \
    591         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
    592 # define SSL_CTX_clear_mode(ctx,op) \
    593         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
    594 # define SSL_CTX_get_mode(ctx) \
    595         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
    596 # define SSL_clear_mode(ssl,op) \
    597         SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
    598 # define SSL_set_mode(ssl,op) \
    599         SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
    600 # define SSL_get_mode(ssl) \
    601         SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
    602 # define SSL_set_mtu(ssl, mtu) \
    603         SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
    604 # define DTLS_set_link_mtu(ssl, mtu) \
    605         SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
    606 # define DTLS_get_link_min_mtu(ssl) \
    607         SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
    608 
    609 # define SSL_get_secure_renegotiation_support(ssl) \
    610         SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
    611 
    612 # ifndef OPENSSL_NO_HEARTBEATS
    613 #  define SSL_heartbeat(ssl) \
    614         SSL_ctrl((ssl),SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT,0,NULL)
    615 # endif
    616 
    617 # define SSL_CTX_set_cert_flags(ctx,op) \
    618         SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
    619 # define SSL_set_cert_flags(s,op) \
    620         SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
    621 # define SSL_CTX_clear_cert_flags(ctx,op) \
    622         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
    623 # define SSL_clear_cert_flags(s,op) \
    624         SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
    625 
    626 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
    627                               void (*cb) (int write_p, int version,
    628                                           int content_type, const void *buf,
    629                                           size_t len, SSL *ssl, void *arg));
    630 void SSL_set_msg_callback(SSL *ssl,
    631                           void (*cb) (int write_p, int version,
    632                                       int content_type, const void *buf,
    633                                       size_t len, SSL *ssl, void *arg));
    634 # define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
    635 # define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
    636 
    637 # define SSL_get_extms_support(s) \
    638         SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
    639 
    640 # ifndef OPENSSL_NO_SRP
    641 
    642 /* see tls_srp.c */
    643 __owur int SSL_SRP_CTX_init(SSL *s);
    644 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
    645 int SSL_SRP_CTX_free(SSL *ctx);
    646 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
    647 __owur int SSL_srp_server_param_with_username(SSL *s, int *ad);
    648 __owur int SRP_Calc_A_param(SSL *s);
    649 
    650 # endif
    651 
    652 /* 100k max cert list */
    653 # define SSL_MAX_CERT_LIST_DEFAULT 1024*100
    654 
    655 # define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT      (1024*20)
    656 
    657 /*
    658  * This callback type is used inside SSL_CTX, SSL, and in the functions that
    659  * set them. It is used to override the generation of SSL/TLS session IDs in
    660  * a server. Return value should be zero on an error, non-zero to proceed.
    661  * Also, callbacks should themselves check if the id they generate is unique
    662  * otherwise the SSL handshake will fail with an error - callbacks can do
    663  * this using the 'ssl' value they're passed by;
    664  * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
    665  * is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
    666  * bytes. The callback can alter this length to be less if desired. It is
    667  * also an error for the callback to set the size to zero.
    668  */
    669 typedef int (*GEN_SESSION_CB) (SSL *ssl, unsigned char *id,
    670                                unsigned int *id_len);
    671 
    672 # define SSL_SESS_CACHE_OFF                      0x0000
    673 # define SSL_SESS_CACHE_CLIENT                   0x0001
    674 # define SSL_SESS_CACHE_SERVER                   0x0002
    675 # define SSL_SESS_CACHE_BOTH     (SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
    676 # define SSL_SESS_CACHE_NO_AUTO_CLEAR            0x0080
    677 /* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
    678 # define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP       0x0100
    679 # define SSL_SESS_CACHE_NO_INTERNAL_STORE        0x0200
    680 # define SSL_SESS_CACHE_NO_INTERNAL \
    681         (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)
    682 
    683 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
    684 # define SSL_CTX_sess_number(ctx) \
    685         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
    686 # define SSL_CTX_sess_connect(ctx) \
    687         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
    688 # define SSL_CTX_sess_connect_good(ctx) \
    689         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
    690 # define SSL_CTX_sess_connect_renegotiate(ctx) \
    691         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
    692 # define SSL_CTX_sess_accept(ctx) \
    693         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
    694 # define SSL_CTX_sess_accept_renegotiate(ctx) \
    695         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
    696 # define SSL_CTX_sess_accept_good(ctx) \
    697         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
    698 # define SSL_CTX_sess_hits(ctx) \
    699         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
    700 # define SSL_CTX_sess_cb_hits(ctx) \
    701         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
    702 # define SSL_CTX_sess_misses(ctx) \
    703         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
    704 # define SSL_CTX_sess_timeouts(ctx) \
    705         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
    706 # define SSL_CTX_sess_cache_full(ctx) \
    707         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
    708 
    709 void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
    710                              int (*new_session_cb) (struct ssl_st *ssl,
    711                                                     SSL_SESSION *sess));
    712 int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
    713                                               SSL_SESSION *sess);
    714 void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
    715                                 void (*remove_session_cb) (struct ssl_ctx_st
    716                                                            *ctx,
    717                                                            SSL_SESSION *sess));
    718 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (struct ssl_ctx_st *ctx,
    719                                                   SSL_SESSION *sess);
    720 void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
    721                              SSL_SESSION *(*get_session_cb) (struct ssl_st
    722                                                              *ssl,
    723                                                              const unsigned char
    724                                                              *data, int len,
    725                                                              int *copy));
    726 SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
    727                                                        const unsigned char *data,
    728                                                        int len, int *copy);
    729 void SSL_CTX_set_info_callback(SSL_CTX *ctx,
    730                                void (*cb) (const SSL *ssl, int type, int val));
    731 void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
    732                                                  int val);
    733 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
    734                                 int (*client_cert_cb) (SSL *ssl, X509 **x509,
    735                                                        EVP_PKEY **pkey));
    736 int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
    737                                                  EVP_PKEY **pkey);
    738 # ifndef OPENSSL_NO_ENGINE
    739 __owur int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
    740 # endif
    741 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
    742                                     int (*app_gen_cookie_cb) (SSL *ssl,
    743                                                               unsigned char
    744                                                               *cookie,
    745                                                               unsigned int
    746                                                               *cookie_len));
    747 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
    748                                   int (*app_verify_cookie_cb) (SSL *ssl,
    749                                                                const unsigned
    750                                                                char *cookie,
    751                                                                unsigned int
    752                                                                cookie_len));
    753 
    754 void SSL_CTX_set_stateless_cookie_generate_cb(
    755     SSL_CTX *ctx,
    756     int (*gen_stateless_cookie_cb) (SSL *ssl,
    757                                     unsigned char *cookie,
    758                                     size_t *cookie_len));
    759 void SSL_CTX_set_stateless_cookie_verify_cb(
    760     SSL_CTX *ctx,
    761     int (*verify_stateless_cookie_cb) (SSL *ssl,
    762                                        const unsigned char *cookie,
    763                                        size_t cookie_len));
    764 # ifndef OPENSSL_NO_NEXTPROTONEG
    765 
    766 typedef int (*SSL_CTX_npn_advertised_cb_func)(SSL *ssl,
    767                                               const unsigned char **out,
    768                                               unsigned int *outlen,
    769                                               void *arg);
    770 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
    771                                            SSL_CTX_npn_advertised_cb_func cb,
    772                                            void *arg);
    773 #  define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
    774 
    775 typedef int (*SSL_CTX_npn_select_cb_func)(SSL *s,
    776                                           unsigned char **out,
    777                                           unsigned char *outlen,
    778                                           const unsigned char *in,
    779                                           unsigned int inlen,
    780                                           void *arg);
    781 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
    782                                       SSL_CTX_npn_select_cb_func cb,
    783                                       void *arg);
    784 #  define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
    785 
    786 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
    787                                     unsigned *len);
    788 #  define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
    789 # endif
    790 
    791 __owur int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
    792                                  const unsigned char *in, unsigned int inlen,
    793                                  const unsigned char *client,
    794                                  unsigned int client_len);
    795 
    796 # define OPENSSL_NPN_UNSUPPORTED 0
    797 # define OPENSSL_NPN_NEGOTIATED  1
    798 # define OPENSSL_NPN_NO_OVERLAP  2
    799 
    800 __owur int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
    801                                    unsigned int protos_len);
    802 __owur int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
    803                                unsigned int protos_len);
    804 typedef int (*SSL_CTX_alpn_select_cb_func)(SSL *ssl,
    805                                            const unsigned char **out,
    806                                            unsigned char *outlen,
    807                                            const unsigned char *in,
    808                                            unsigned int inlen,
    809                                            void *arg);
    810 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
    811                                 SSL_CTX_alpn_select_cb_func cb,
    812                                 void *arg);
    813 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
    814                             unsigned int *len);
    815 
    816 # ifndef OPENSSL_NO_PSK
    817 /*
    818  * the maximum length of the buffer given to callbacks containing the
    819  * resulting identity/psk
    820  */
    821 #  define PSK_MAX_IDENTITY_LEN 128
    822 #  define PSK_MAX_PSK_LEN 256
    823 typedef unsigned int (*SSL_psk_client_cb_func)(SSL *ssl,
    824                                                const char *hint,
    825                                                char *identity,
    826                                                unsigned int max_identity_len,
    827                                                unsigned char *psk,
    828                                                unsigned int max_psk_len);
    829 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
    830 void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
    831 
    832 typedef unsigned int (*SSL_psk_server_cb_func)(SSL *ssl,
    833                                                const char *identity,
    834                                                unsigned char *psk,
    835                                                unsigned int max_psk_len);
    836 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
    837 void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
    838 
    839 __owur int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
    840 __owur int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
    841 const char *SSL_get_psk_identity_hint(const SSL *s);
    842 const char *SSL_get_psk_identity(const SSL *s);
    843 # endif
    844 
    845 typedef int (*SSL_psk_find_session_cb_func)(SSL *ssl,
    846                                             const unsigned char *identity,
    847                                             size_t identity_len,
    848                                             SSL_SESSION **sess);
    849 typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
    850                                            const unsigned char **id,
    851                                            size_t *idlen,
    852                                            SSL_SESSION **sess);
    853 
    854 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
    855 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
    856                                            SSL_psk_find_session_cb_func cb);
    857 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
    858 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
    859                                           SSL_psk_use_session_cb_func cb);
    860 
    861 /* Register callbacks to handle custom TLS Extensions for client or server. */
    862 
    863 __owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
    864                                          unsigned int ext_type);
    865 
    866 __owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
    867                                          unsigned int ext_type,
    868                                          custom_ext_add_cb add_cb,
    869                                          custom_ext_free_cb free_cb,
    870                                          void *add_arg,
    871                                          custom_ext_parse_cb parse_cb,
    872                                          void *parse_arg);
    873 
    874 __owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
    875                                          unsigned int ext_type,
    876                                          custom_ext_add_cb add_cb,
    877                                          custom_ext_free_cb free_cb,
    878                                          void *add_arg,
    879                                          custom_ext_parse_cb parse_cb,
    880                                          void *parse_arg);
    881 
    882 __owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
    883                                   unsigned int context,
    884                                   SSL_custom_ext_add_cb_ex add_cb,
    885                                   SSL_custom_ext_free_cb_ex free_cb,
    886                                   void *add_arg,
    887                                   SSL_custom_ext_parse_cb_ex parse_cb,
    888                                   void *parse_arg);
    889 
    890 __owur int SSL_extension_supported(unsigned int ext_type);
    891 
    892 # define SSL_NOTHING            1
    893 # define SSL_WRITING            2
    894 # define SSL_READING            3
    895 # define SSL_X509_LOOKUP        4
    896 # define SSL_ASYNC_PAUSED       5
    897 # define SSL_ASYNC_NO_JOBS      6
    898 # define SSL_CLIENT_HELLO_CB    7
    899 
    900 /* These will only be used when doing non-blocking IO */
    901 # define SSL_want_nothing(s)         (SSL_want(s) == SSL_NOTHING)
    902 # define SSL_want_read(s)            (SSL_want(s) == SSL_READING)
    903 # define SSL_want_write(s)           (SSL_want(s) == SSL_WRITING)
    904 # define SSL_want_x509_lookup(s)     (SSL_want(s) == SSL_X509_LOOKUP)
    905 # define SSL_want_async(s)           (SSL_want(s) == SSL_ASYNC_PAUSED)
    906 # define SSL_want_async_job(s)       (SSL_want(s) == SSL_ASYNC_NO_JOBS)
    907 # define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
    908 
    909 # define SSL_MAC_FLAG_READ_MAC_STREAM 1
    910 # define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
    911 
    912 /*
    913  * A callback for logging out TLS key material. This callback should log out
    914  * |line| followed by a newline.
    915  */
    916 typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);
    917 
    918 /*
    919  * SSL_CTX_set_keylog_callback configures a callback to log key material. This
    920  * is intended for debugging use with tools like Wireshark. The cb function
    921  * should log line followed by a newline.
    922  */
    923 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
    924 
    925 /*
    926  * SSL_CTX_get_keylog_callback returns the callback configured by
    927  * SSL_CTX_set_keylog_callback.
    928  */
    929 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
    930 
    931 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
    932 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
    933 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
    934 uint32_t SSL_get_max_early_data(const SSL *s);
    935 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
    936 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
    937 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
    938 uint32_t SSL_get_recv_max_early_data(const SSL *s);
    939 
    940 #ifdef __cplusplus
    941 }
    942 #endif
    943 
    944 # include <openssl/ssl2.h>
    945 # include <openssl/ssl3.h>
    946 # include <openssl/tls1.h>      /* This is mostly sslv3 with a few tweaks */
    947 # include <openssl/dtls1.h>     /* Datagram TLS */
    948 # include <openssl/srtp.h>      /* Support for the use_srtp extension */
    949 
    950 #ifdef  __cplusplus
    951 extern "C" {
    952 #endif
    953 
    954 /*
    955  * These need to be after the above set of includes due to a compiler bug
    956  * in VisualStudio 2015
    957  */
    958 DEFINE_STACK_OF_CONST(SSL_CIPHER)
    959 DEFINE_STACK_OF(SSL_COMP)
    960 
    961 /* compatibility */
    962 # define SSL_set_app_data(s,arg)         (SSL_set_ex_data(s,0,(char *)(arg)))
    963 # define SSL_get_app_data(s)             (SSL_get_ex_data(s,0))
    964 # define SSL_SESSION_set_app_data(s,a)   (SSL_SESSION_set_ex_data(s,0, \
    965                                                                   (char *)(a)))
    966 # define SSL_SESSION_get_app_data(s)     (SSL_SESSION_get_ex_data(s,0))
    967 # define SSL_CTX_get_app_data(ctx)       (SSL_CTX_get_ex_data(ctx,0))
    968 # define SSL_CTX_set_app_data(ctx,arg)   (SSL_CTX_set_ex_data(ctx,0, \
    969                                                               (char *)(arg)))
    970 DEPRECATEDIN_1_1_0(void SSL_set_debug(SSL *s, int debug))
    971 
    972 /* TLSv1.3 KeyUpdate message types */
    973 /* -1 used so that this is an invalid value for the on-the-wire protocol */
    974 #define SSL_KEY_UPDATE_NONE             -1
    975 /* Values as defined for the on-the-wire protocol */
    976 #define SSL_KEY_UPDATE_NOT_REQUESTED     0
    977 #define SSL_KEY_UPDATE_REQUESTED         1
    978 
    979 /*
    980  * The valid handshake states (one for each type message sent and one for each
    981  * type of message received). There are also two "special" states:
    982  * TLS = TLS or DTLS state
    983  * DTLS = DTLS specific state
    984  * CR/SR = Client Read/Server Read
    985  * CW/SW = Client Write/Server Write
    986  *
    987  * The "special" states are:
    988  * TLS_ST_BEFORE = No handshake has been initiated yet
    989  * TLS_ST_OK = A handshake has been successfully completed
    990  */
    991 typedef enum {
    992     TLS_ST_BEFORE,
    993     TLS_ST_OK,
    994     DTLS_ST_CR_HELLO_VERIFY_REQUEST,
    995     TLS_ST_CR_SRVR_HELLO,
    996     TLS_ST_CR_CERT,
    997     TLS_ST_CR_CERT_STATUS,
    998     TLS_ST_CR_KEY_EXCH,
    999     TLS_ST_CR_CERT_REQ,
   1000     TLS_ST_CR_SRVR_DONE,
   1001     TLS_ST_CR_SESSION_TICKET,
   1002     TLS_ST_CR_CHANGE,
   1003     TLS_ST_CR_FINISHED,
   1004     TLS_ST_CW_CLNT_HELLO,
   1005     TLS_ST_CW_CERT,
   1006     TLS_ST_CW_KEY_EXCH,
   1007     TLS_ST_CW_CERT_VRFY,
   1008     TLS_ST_CW_CHANGE,
   1009     TLS_ST_CW_NEXT_PROTO,
   1010     TLS_ST_CW_FINISHED,
   1011     TLS_ST_SW_HELLO_REQ,
   1012     TLS_ST_SR_CLNT_HELLO,
   1013     DTLS_ST_SW_HELLO_VERIFY_REQUEST,
   1014     TLS_ST_SW_SRVR_HELLO,
   1015     TLS_ST_SW_CERT,
   1016     TLS_ST_SW_KEY_EXCH,
   1017     TLS_ST_SW_CERT_REQ,
   1018     TLS_ST_SW_SRVR_DONE,
   1019     TLS_ST_SR_CERT,
   1020     TLS_ST_SR_KEY_EXCH,
   1021     TLS_ST_SR_CERT_VRFY,
   1022     TLS_ST_SR_NEXT_PROTO,
   1023     TLS_ST_SR_CHANGE,
   1024     TLS_ST_SR_FINISHED,
   1025     TLS_ST_SW_SESSION_TICKET,
   1026     TLS_ST_SW_CERT_STATUS,
   1027     TLS_ST_SW_CHANGE,
   1028     TLS_ST_SW_FINISHED,
   1029     TLS_ST_SW_ENCRYPTED_EXTENSIONS,
   1030     TLS_ST_CR_ENCRYPTED_EXTENSIONS,
   1031     TLS_ST_CR_CERT_VRFY,
   1032     TLS_ST_SW_CERT_VRFY,
   1033     TLS_ST_CR_HELLO_REQ,
   1034     TLS_ST_SW_KEY_UPDATE,
   1035     TLS_ST_CW_KEY_UPDATE,
   1036     TLS_ST_SR_KEY_UPDATE,
   1037     TLS_ST_CR_KEY_UPDATE,
   1038     TLS_ST_EARLY_DATA,
   1039     TLS_ST_PENDING_EARLY_DATA_END,
   1040     TLS_ST_CW_END_OF_EARLY_DATA,
   1041     TLS_ST_SR_END_OF_EARLY_DATA
   1042 } OSSL_HANDSHAKE_STATE;
   1043 
   1044 /*
   1045  * Most of the following state values are no longer used and are defined to be
   1046  * the closest equivalent value in the current state machine code. Not all
   1047  * defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
   1048  * and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
   1049  * SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
   1050  */
   1051 
   1052 # define SSL_ST_CONNECT                  0x1000
   1053 # define SSL_ST_ACCEPT                   0x2000
   1054 
   1055 # define SSL_ST_MASK                     0x0FFF
   1056 
   1057 # define SSL_CB_LOOP                     0x01
   1058 # define SSL_CB_EXIT                     0x02
   1059 # define SSL_CB_READ                     0x04
   1060 # define SSL_CB_WRITE                    0x08
   1061 # define SSL_CB_ALERT                    0x4000/* used in callback */
   1062 # define SSL_CB_READ_ALERT               (SSL_CB_ALERT|SSL_CB_READ)
   1063 # define SSL_CB_WRITE_ALERT              (SSL_CB_ALERT|SSL_CB_WRITE)
   1064 # define SSL_CB_ACCEPT_LOOP              (SSL_ST_ACCEPT|SSL_CB_LOOP)
   1065 # define SSL_CB_ACCEPT_EXIT              (SSL_ST_ACCEPT|SSL_CB_EXIT)
   1066 # define SSL_CB_CONNECT_LOOP             (SSL_ST_CONNECT|SSL_CB_LOOP)
   1067 # define SSL_CB_CONNECT_EXIT             (SSL_ST_CONNECT|SSL_CB_EXIT)
   1068 # define SSL_CB_HANDSHAKE_START          0x10
   1069 # define SSL_CB_HANDSHAKE_DONE           0x20
   1070 
   1071 /* Is the SSL_connection established? */
   1072 # define SSL_in_connect_init(a)          (SSL_in_init(a) && !SSL_is_server(a))
   1073 # define SSL_in_accept_init(a)           (SSL_in_init(a) && SSL_is_server(a))
   1074 int SSL_in_init(const SSL *s);
   1075 int SSL_in_before(const SSL *s);
   1076 int SSL_is_init_finished(const SSL *s);
   1077 
   1078 /*
   1079  * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
   1080  * should not need these
   1081  */
   1082 # define SSL_ST_READ_HEADER                      0xF0
   1083 # define SSL_ST_READ_BODY                        0xF1
   1084 # define SSL_ST_READ_DONE                        0xF2
   1085 
   1086 /*-
   1087  * Obtain latest Finished message
   1088  *   -- that we sent (SSL_get_finished)
   1089  *   -- that we expected from peer (SSL_get_peer_finished).
   1090  * Returns length (0 == no Finished so far), copies up to 'count' bytes.
   1091  */
   1092 size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
   1093 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
   1094 
   1095 /*
   1096  * use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
   1097  * 'ored' with SSL_VERIFY_PEER if they are desired
   1098  */
   1099 # define SSL_VERIFY_NONE                 0x00
   1100 # define SSL_VERIFY_PEER                 0x01
   1101 # define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
   1102 # define SSL_VERIFY_CLIENT_ONCE          0x04
   1103 # define SSL_VERIFY_POST_HANDSHAKE       0x08
   1104 
   1105 # if OPENSSL_API_COMPAT < 0x10100000L
   1106 #  define OpenSSL_add_ssl_algorithms()   SSL_library_init()
   1107 #  define SSLeay_add_ssl_algorithms()    SSL_library_init()
   1108 # endif
   1109 
   1110 /* More backward compatibility */
   1111 # define SSL_get_cipher(s) \
   1112                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
   1113 # define SSL_get_cipher_bits(s,np) \
   1114                 SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
   1115 # define SSL_get_cipher_version(s) \
   1116                 SSL_CIPHER_get_version(SSL_get_current_cipher(s))
   1117 # define SSL_get_cipher_name(s) \
   1118                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
   1119 # define SSL_get_time(a)         SSL_SESSION_get_time(a)
   1120 # define SSL_set_time(a,b)       SSL_SESSION_set_time((a),(b))
   1121 # define SSL_get_timeout(a)      SSL_SESSION_get_timeout(a)
   1122 # define SSL_set_timeout(a,b)    SSL_SESSION_set_timeout((a),(b))
   1123 
   1124 # define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
   1125 # define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
   1126 
   1127 DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
   1128 # define SSL_AD_REASON_OFFSET            1000/* offset to get SSL_R_... value
   1129                                               * from SSL_AD_... */
   1130 /* These alert types are for SSLv3 and TLSv1 */
   1131 # define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
   1132 /* fatal */
   1133 # define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE
   1134 /* fatal */
   1135 # define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC
   1136 # define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
   1137 # define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
   1138 /* fatal */
   1139 # define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE
   1140 /* fatal */
   1141 # define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE
   1142 /* Not for TLS */
   1143 # define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE
   1144 # define SSL_AD_BAD_CERTIFICATE          SSL3_AD_BAD_CERTIFICATE
   1145 # define SSL_AD_UNSUPPORTED_CERTIFICATE  SSL3_AD_UNSUPPORTED_CERTIFICATE
   1146 # define SSL_AD_CERTIFICATE_REVOKED      SSL3_AD_CERTIFICATE_REVOKED
   1147 # define SSL_AD_CERTIFICATE_EXPIRED      SSL3_AD_CERTIFICATE_EXPIRED
   1148 # define SSL_AD_CERTIFICATE_UNKNOWN      SSL3_AD_CERTIFICATE_UNKNOWN
   1149 /* fatal */
   1150 # define SSL_AD_ILLEGAL_PARAMETER        SSL3_AD_ILLEGAL_PARAMETER
   1151 /* fatal */
   1152 # define SSL_AD_UNKNOWN_CA               TLS1_AD_UNKNOWN_CA
   1153 /* fatal */
   1154 # define SSL_AD_ACCESS_DENIED            TLS1_AD_ACCESS_DENIED
   1155 /* fatal */
   1156 # define SSL_AD_DECODE_ERROR             TLS1_AD_DECODE_ERROR
   1157 # define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
   1158 /* fatal */
   1159 # define SSL_AD_EXPORT_RESTRICTION       TLS1_AD_EXPORT_RESTRICTION
   1160 /* fatal */
   1161 # define SSL_AD_PROTOCOL_VERSION         TLS1_AD_PROTOCOL_VERSION
   1162 /* fatal */
   1163 # define SSL_AD_INSUFFICIENT_SECURITY    TLS1_AD_INSUFFICIENT_SECURITY
   1164 /* fatal */
   1165 # define SSL_AD_INTERNAL_ERROR           TLS1_AD_INTERNAL_ERROR
   1166 # define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
   1167 # define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
   1168 # define SSL_AD_MISSING_EXTENSION        TLS13_AD_MISSING_EXTENSION
   1169 # define SSL_AD_CERTIFICATE_REQUIRED     TLS13_AD_CERTIFICATE_REQUIRED
   1170 # define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
   1171 # define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
   1172 # define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
   1173 # define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
   1174 # define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
   1175 /* fatal */
   1176 # define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY
   1177 /* fatal */
   1178 # define SSL_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK
   1179 # define SSL_AD_NO_APPLICATION_PROTOCOL  TLS1_AD_NO_APPLICATION_PROTOCOL
   1180 # define SSL_ERROR_NONE                  0
   1181 # define SSL_ERROR_SSL                   1
   1182 # define SSL_ERROR_WANT_READ             2
   1183 # define SSL_ERROR_WANT_WRITE            3
   1184 # define SSL_ERROR_WANT_X509_LOOKUP      4
   1185 # define SSL_ERROR_SYSCALL               5/* look at error stack/return
   1186                                            * value/errno */
   1187 # define SSL_ERROR_ZERO_RETURN           6
   1188 # define SSL_ERROR_WANT_CONNECT          7
   1189 # define SSL_ERROR_WANT_ACCEPT           8
   1190 # define SSL_ERROR_WANT_ASYNC            9
   1191 # define SSL_ERROR_WANT_ASYNC_JOB       10
   1192 # define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
   1193 # define SSL_CTRL_SET_TMP_DH                     3
   1194 # define SSL_CTRL_SET_TMP_ECDH                   4
   1195 # define SSL_CTRL_SET_TMP_DH_CB                  6
   1196 # define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
   1197 # define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
   1198 # define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
   1199 # define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
   1200 # define SSL_CTRL_GET_FLAGS                      13
   1201 # define SSL_CTRL_EXTRA_CHAIN_CERT               14
   1202 # define SSL_CTRL_SET_MSG_CALLBACK               15
   1203 # define SSL_CTRL_SET_MSG_CALLBACK_ARG           16
   1204 /* only applies to datagram connections */
   1205 # define SSL_CTRL_SET_MTU                17
   1206 /* Stats */
   1207 # define SSL_CTRL_SESS_NUMBER                    20
   1208 # define SSL_CTRL_SESS_CONNECT                   21
   1209 # define SSL_CTRL_SESS_CONNECT_GOOD              22
   1210 # define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
   1211 # define SSL_CTRL_SESS_ACCEPT                    24
   1212 # define SSL_CTRL_SESS_ACCEPT_GOOD               25
   1213 # define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
   1214 # define SSL_CTRL_SESS_HIT                       27
   1215 # define SSL_CTRL_SESS_CB_HIT                    28
   1216 # define SSL_CTRL_SESS_MISSES                    29
   1217 # define SSL_CTRL_SESS_TIMEOUTS                  30
   1218 # define SSL_CTRL_SESS_CACHE_FULL                31
   1219 # define SSL_CTRL_MODE                           33
   1220 # define SSL_CTRL_GET_READ_AHEAD                 40
   1221 # define SSL_CTRL_SET_READ_AHEAD                 41
   1222 # define SSL_CTRL_SET_SESS_CACHE_SIZE            42
   1223 # define SSL_CTRL_GET_SESS_CACHE_SIZE            43
   1224 # define SSL_CTRL_SET_SESS_CACHE_MODE            44
   1225 # define SSL_CTRL_GET_SESS_CACHE_MODE            45
   1226 # define SSL_CTRL_GET_MAX_CERT_LIST              50
   1227 # define SSL_CTRL_SET_MAX_CERT_LIST              51
   1228 # define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52
   1229 /* see tls1.h for macros based on these */
   1230 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
   1231 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
   1232 # define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
   1233 # define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
   1234 # define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
   1235 # define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
   1236 # define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
   1237 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60 */
   1238 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 */
   1239 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 */
   1240 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
   1241 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
   1242 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
   1243 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
   1244 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
   1245 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
   1246 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
   1247 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
   1248 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71
   1249 # define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB       72
   1250 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
   1251 # define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
   1252 # define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77
   1253 # define SSL_CTRL_SET_SRP_ARG            78
   1254 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
   1255 # define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
   1256 # define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
   1257 # ifndef OPENSSL_NO_HEARTBEATS
   1258 #  define SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT               85
   1259 #  define SSL_CTRL_GET_DTLS_EXT_HEARTBEAT_PENDING        86
   1260 #  define SSL_CTRL_SET_DTLS_EXT_HEARTBEAT_NO_REQUESTS    87
   1261 # endif
   1262 # define DTLS_CTRL_GET_TIMEOUT           73
   1263 # define DTLS_CTRL_HANDLE_TIMEOUT        74
   1264 # define SSL_CTRL_GET_RI_SUPPORT                 76
   1265 # define SSL_CTRL_CLEAR_MODE                     78
   1266 # define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB      79
   1267 # define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
   1268 # define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83
   1269 # define SSL_CTRL_CHAIN                          88
   1270 # define SSL_CTRL_CHAIN_CERT                     89
   1271 # define SSL_CTRL_GET_GROUPS                     90
   1272 # define SSL_CTRL_SET_GROUPS                     91
   1273 # define SSL_CTRL_SET_GROUPS_LIST                92
   1274 # define SSL_CTRL_GET_SHARED_GROUP               93
   1275 # define SSL_CTRL_SET_SIGALGS                    97
   1276 # define SSL_CTRL_SET_SIGALGS_LIST               98
   1277 # define SSL_CTRL_CERT_FLAGS                     99
   1278 # define SSL_CTRL_CLEAR_CERT_FLAGS               100
   1279 # define SSL_CTRL_SET_CLIENT_SIGALGS             101
   1280 # define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
   1281 # define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
   1282 # define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
   1283 # define SSL_CTRL_BUILD_CERT_CHAIN               105
   1284 # define SSL_CTRL_SET_VERIFY_CERT_STORE          106
   1285 # define SSL_CTRL_SET_CHAIN_CERT_STORE           107
   1286 # define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
   1287 # define SSL_CTRL_GET_PEER_TMP_KEY               109
   1288 # define SSL_CTRL_GET_RAW_CIPHERLIST             110
   1289 # define SSL_CTRL_GET_EC_POINT_FORMATS           111
   1290 # define SSL_CTRL_GET_CHAIN_CERTS                115
   1291 # define SSL_CTRL_SELECT_CURRENT_CERT            116
   1292 # define SSL_CTRL_SET_CURRENT_CERT               117
   1293 # define SSL_CTRL_SET_DH_AUTO                    118
   1294 # define DTLS_CTRL_SET_LINK_MTU                  120
   1295 # define DTLS_CTRL_GET_LINK_MIN_MTU              121
   1296 # define SSL_CTRL_GET_EXTMS_SUPPORT              122
   1297 # define SSL_CTRL_SET_MIN_PROTO_VERSION          123
   1298 # define SSL_CTRL_SET_MAX_PROTO_VERSION          124
   1299 # define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT        125
   1300 # define SSL_CTRL_SET_MAX_PIPELINES              126
   1301 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE     127
   1302 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB       128
   1303 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG   129
   1304 # define SSL_CTRL_GET_MIN_PROTO_VERSION          130
   1305 # define SSL_CTRL_GET_MAX_PROTO_VERSION          131
   1306 # define SSL_CTRL_GET_SIGNATURE_NID              132
   1307 # define SSL_CTRL_GET_TMP_KEY                    133
   1308 # define SSL_CTRL_GET_VERIFY_CERT_STORE          137
   1309 # define SSL_CTRL_GET_CHAIN_CERT_STORE           138
   1310 # define SSL_CERT_SET_FIRST                      1
   1311 # define SSL_CERT_SET_NEXT                       2
   1312 # define SSL_CERT_SET_SERVER                     3
   1313 # define DTLSv1_get_timeout(ssl, arg) \
   1314         SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
   1315 # define DTLSv1_handle_timeout(ssl) \
   1316         SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
   1317 # define SSL_num_renegotiations(ssl) \
   1318         SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
   1319 # define SSL_clear_num_renegotiations(ssl) \
   1320         SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
   1321 # define SSL_total_renegotiations(ssl) \
   1322         SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
   1323 # define SSL_CTX_set_tmp_dh(ctx,dh) \
   1324         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
   1325 # define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
   1326         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
   1327 # define SSL_CTX_set_dh_auto(ctx, onoff) \
   1328         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
   1329 # define SSL_set_dh_auto(s, onoff) \
   1330         SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
   1331 # define SSL_set_tmp_dh(ssl,dh) \
   1332         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
   1333 # define SSL_set_tmp_ecdh(ssl,ecdh) \
   1334         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
   1335 # define SSL_CTX_add_extra_chain_cert(ctx,x509) \
   1336         SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
   1337 # define SSL_CTX_get_extra_chain_certs(ctx,px509) \
   1338         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
   1339 # define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
   1340         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
   1341 # define SSL_CTX_clear_extra_chain_certs(ctx) \
   1342         SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
   1343 # define SSL_CTX_set0_chain(ctx,sk) \
   1344         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
   1345 # define SSL_CTX_set1_chain(ctx,sk) \
   1346         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
   1347 # define SSL_CTX_add0_chain_cert(ctx,x509) \
   1348         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
   1349 # define SSL_CTX_add1_chain_cert(ctx,x509) \
   1350         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
   1351 # define SSL_CTX_get0_chain_certs(ctx,px509) \
   1352         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
   1353 # define SSL_CTX_clear_chain_certs(ctx) \
   1354         SSL_CTX_set0_chain(ctx,NULL)
   1355 # define SSL_CTX_build_cert_chain(ctx, flags) \
   1356         SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
   1357 # define SSL_CTX_select_current_cert(ctx,x509) \
   1358         SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
   1359 # define SSL_CTX_set_current_cert(ctx, op) \
   1360         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
   1361 # define SSL_CTX_set0_verify_cert_store(ctx,st) \
   1362         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
   1363 # define SSL_CTX_set1_verify_cert_store(ctx,st) \
   1364         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
   1365 # define SSL_CTX_get0_verify_cert_store(ctx,st) \
   1366         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
   1367 # define SSL_CTX_set0_chain_cert_store(ctx,st) \
   1368         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
   1369 # define SSL_CTX_set1_chain_cert_store(ctx,st) \
   1370         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
   1371 # define SSL_CTX_get0_chain_cert_store(ctx,st) \
   1372         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
   1373 # define SSL_set0_chain(s,sk) \
   1374         SSL_ctrl(s,SSL_CTRL_CHAIN,0,(char *)(sk))
   1375 # define SSL_set1_chain(s,sk) \
   1376         SSL_ctrl(s,SSL_CTRL_CHAIN,1,(char *)(sk))
   1377 # define SSL_add0_chain_cert(s,x509) \
   1378         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
   1379 # define SSL_add1_chain_cert(s,x509) \
   1380         SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
   1381 # define SSL_get0_chain_certs(s,px509) \
   1382         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
   1383 # define SSL_clear_chain_certs(s) \
   1384         SSL_set0_chain(s,NULL)
   1385 # define SSL_build_cert_chain(s, flags) \
   1386         SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
   1387 # define SSL_select_current_cert(s,x509) \
   1388         SSL_ctrl(s,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
   1389 # define SSL_set_current_cert(s,op) \
   1390         SSL_ctrl(s,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
   1391 # define SSL_set0_verify_cert_store(s,st) \
   1392         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
   1393 # define SSL_set1_verify_cert_store(s,st) \
   1394         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
   1395 #define SSL_get0_verify_cert_store(s,st) \
   1396         SSL_ctrl(s,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
   1397 # define SSL_set0_chain_cert_store(s,st) \
   1398         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
   1399 # define SSL_set1_chain_cert_store(s,st) \
   1400         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
   1401 #define SSL_get0_chain_cert_store(s,st) \
   1402         SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
   1403 # define SSL_get1_groups(s, glist) \
   1404         SSL_ctrl(s,SSL_CTRL_GET_GROUPS,0,(int*)(glist))
   1405 # define SSL_CTX_set1_groups(ctx, glist, glistlen) \
   1406         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(int *)(glist))
   1407 # define SSL_CTX_set1_groups_list(ctx, s) \
   1408         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
   1409 # define SSL_set1_groups(s, glist, glistlen) \
   1410         SSL_ctrl(s,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
   1411 # define SSL_set1_groups_list(s, str) \
   1412         SSL_ctrl(s,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(str))
   1413 # define SSL_get_shared_group(s, n) \
   1414         SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
   1415 # define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
   1416         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
   1417 # define SSL_CTX_set1_sigalgs_list(ctx, s) \
   1418         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
   1419 # define SSL_set1_sigalgs(s, slist, slistlen) \
   1420         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
   1421 # define SSL_set1_sigalgs_list(s, str) \
   1422         SSL_ctrl(s,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(str))
   1423 # define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
   1424         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
   1425 # define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
   1426         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
   1427 # define SSL_set1_client_sigalgs(s, slist, slistlen) \
   1428         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
   1429 # define SSL_set1_client_sigalgs_list(s, str) \
   1430         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(str))
   1431 # define SSL_get0_certificate_types(s, clist) \
   1432         SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
   1433 # define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
   1434         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
   1435                      (char *)(clist))
   1436 # define SSL_set1_client_certificate_types(s, clist, clistlen) \
   1437         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
   1438 # define SSL_get_signature_nid(s, pn) \
   1439         SSL_ctrl(s,SSL_CTRL_GET_SIGNATURE_NID,0,pn)
   1440 # define SSL_get_peer_signature_nid(s, pn) \
   1441         SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
   1442 # define SSL_get_peer_tmp_key(s, pk) \
   1443         SSL_ctrl(s,SSL_CTRL_GET_PEER_TMP_KEY,0,pk)
   1444 # define SSL_get_tmp_key(s, pk) \
   1445         SSL_ctrl(s,SSL_CTRL_GET_TMP_KEY,0,pk)
   1446 # define SSL_get0_raw_cipherlist(s, plst) \
   1447         SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
   1448 # define SSL_get0_ec_point_formats(s, plst) \
   1449         SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
   1450 # define SSL_CTX_set_min_proto_version(ctx, version) \
   1451         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
   1452 # define SSL_CTX_set_max_proto_version(ctx, version) \
   1453         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
   1454 # define SSL_CTX_get_min_proto_version(ctx) \
   1455         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
   1456 # define SSL_CTX_get_max_proto_version(ctx) \
   1457         SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
   1458 # define SSL_set_min_proto_version(s, version) \
   1459         SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
   1460 # define SSL_set_max_proto_version(s, version) \
   1461         SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
   1462 # define SSL_get_min_proto_version(s) \
   1463         SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
   1464 # define SSL_get_max_proto_version(s) \
   1465         SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
   1466 
   1467 /* Backwards compatibility, original 1.1.0 names */
   1468 # define SSL_CTRL_GET_SERVER_TMP_KEY \
   1469          SSL_CTRL_GET_PEER_TMP_KEY
   1470 # define SSL_get_server_tmp_key(s, pk) \
   1471          SSL_get_peer_tmp_key(s, pk)
   1472 
   1473 /*
   1474  * The following symbol names are old and obsolete. They are kept
   1475  * for compatibility reasons only and should not be used anymore.
   1476  */
   1477 # define SSL_CTRL_GET_CURVES           SSL_CTRL_GET_GROUPS
   1478 # define SSL_CTRL_SET_CURVES           SSL_CTRL_SET_GROUPS
   1479 # define SSL_CTRL_SET_CURVES_LIST      SSL_CTRL_SET_GROUPS_LIST
   1480 # define SSL_CTRL_GET_SHARED_CURVE     SSL_CTRL_GET_SHARED_GROUP
   1481 
   1482 # define SSL_get1_curves               SSL_get1_groups
   1483 # define SSL_CTX_set1_curves           SSL_CTX_set1_groups
   1484 # define SSL_CTX_set1_curves_list      SSL_CTX_set1_groups_list
   1485 # define SSL_set1_curves               SSL_set1_groups
   1486 # define SSL_set1_curves_list          SSL_set1_groups_list
   1487 # define SSL_get_shared_curve          SSL_get_shared_group
   1488 
   1489 
   1490 # if OPENSSL_API_COMPAT < 0x10100000L
   1491 /* Provide some compatibility macros for removed functionality. */
   1492 #  define SSL_CTX_need_tmp_RSA(ctx)                0
   1493 #  define SSL_CTX_set_tmp_rsa(ctx,rsa)             1
   1494 #  define SSL_need_tmp_RSA(ssl)                    0
   1495 #  define SSL_set_tmp_rsa(ssl,rsa)                 1
   1496 #  define SSL_CTX_set_ecdh_auto(dummy, onoff)      ((onoff) != 0)
   1497 #  define SSL_set_ecdh_auto(dummy, onoff)          ((onoff) != 0)
   1498 /*
   1499  * We "pretend" to call the callback to avoid warnings about unused static
   1500  * functions.
   1501  */
   1502 #  define SSL_CTX_set_tmp_rsa_callback(ctx, cb)    while(0) (cb)(NULL, 0, 0)
   1503 #  define SSL_set_tmp_rsa_callback(ssl, cb)        while(0) (cb)(NULL, 0, 0)
   1504 # endif
   1505 __owur const BIO_METHOD *BIO_f_ssl(void);
   1506 __owur BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
   1507 __owur BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
   1508 __owur BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
   1509 __owur int BIO_ssl_copy_session_id(BIO *to, BIO *from);
   1510 void BIO_ssl_shutdown(BIO *ssl_bio);
   1511 
   1512 __owur int SSL_CTX_set_cipher_list(SSL_CTX *, const char *str);
   1513 __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
   1514 int SSL_CTX_up_ref(SSL_CTX *ctx);
   1515 void SSL_CTX_free(SSL_CTX *);
   1516 __owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
   1517 __owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
   1518 __owur X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
   1519 void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
   1520 void SSL_CTX_set1_cert_store(SSL_CTX *, X509_STORE *);
   1521 __owur int SSL_want(const SSL *s);
   1522 __owur int SSL_clear(SSL *s);
   1523 
   1524 void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
   1525 
   1526 __owur const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
   1527 __owur const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s);
   1528 __owur int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits);
   1529 __owur const char *SSL_CIPHER_get_version(const SSL_CIPHER *c);
   1530 __owur const char *SSL_CIPHER_get_name(const SSL_CIPHER *c);
   1531 __owur const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
   1532 __owur const char *OPENSSL_cipher_name(const char *rfc_name);
   1533 __owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
   1534 __owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
   1535 __owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
   1536 __owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
   1537 __owur const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c);
   1538 __owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
   1539 
   1540 __owur int SSL_get_fd(const SSL *s);
   1541 __owur int SSL_get_rfd(const SSL *s);
   1542 __owur int SSL_get_wfd(const SSL *s);
   1543 __owur const char *SSL_get_cipher_list(const SSL *s, int n);
   1544 __owur char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size);
   1545 __owur int SSL_get_read_ahead(const SSL *s);
   1546 __owur int SSL_pending(const SSL *s);
   1547 __owur int SSL_has_pending(const SSL *s);
   1548 # ifndef OPENSSL_NO_SOCK
   1549 __owur int SSL_set_fd(SSL *s, int fd);
   1550 __owur int SSL_set_rfd(SSL *s, int fd);
   1551 __owur int SSL_set_wfd(SSL *s, int fd);
   1552 # endif
   1553 void SSL_set0_rbio(SSL *s, BIO *rbio);
   1554 void SSL_set0_wbio(SSL *s, BIO *wbio);
   1555 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio);
   1556 __owur BIO *SSL_get_rbio(const SSL *s);
   1557 __owur BIO *SSL_get_wbio(const SSL *s);
   1558 __owur int SSL_set_cipher_list(SSL *s, const char *str);
   1559 __owur int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str);
   1560 __owur int SSL_set_ciphersuites(SSL *s, const char *str);
   1561 void SSL_set_read_ahead(SSL *s, int yes);
   1562 __owur int SSL_get_verify_mode(const SSL *s);
   1563 __owur int SSL_get_verify_depth(const SSL *s);
   1564 __owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
   1565 void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
   1566 void SSL_set_verify_depth(SSL *s, int depth);
   1567 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg);
   1568 # ifndef OPENSSL_NO_RSA
   1569 __owur int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
   1570 __owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d,
   1571                                       long len);
   1572 # endif
   1573 __owur int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
   1574 __owur int SSL_use_PrivateKey_ASN1(int pk, SSL *ssl, const unsigned char *d,
   1575                                    long len);
   1576 __owur int SSL_use_certificate(SSL *ssl, X509 *x);
   1577 __owur int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);
   1578 __owur int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
   1579                                 STACK_OF(X509) *chain, int override);
   1580 
   1581 
   1582 /* serverinfo file format versions */
   1583 # define SSL_SERVERINFOV1   1
   1584 # define SSL_SERVERINFOV2   2
   1585 
   1586 /* Set serverinfo data for the current active cert. */
   1587 __owur int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
   1588                                   size_t serverinfo_length);
   1589 __owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
   1590                                      const unsigned char *serverinfo,
   1591                                      size_t serverinfo_length);
   1592 __owur int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
   1593 
   1594 #ifndef OPENSSL_NO_RSA
   1595 __owur int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
   1596 #endif
   1597 
   1598 __owur int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
   1599 __owur int SSL_use_certificate_file(SSL *ssl, const char *file, int type);
   1600 
   1601 #ifndef OPENSSL_NO_RSA
   1602 __owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file,
   1603                                           int type);
   1604 #endif
   1605 __owur int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
   1606                                        int type);
   1607 __owur int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
   1608                                         int type);
   1609 /* PEM type */
   1610 __owur int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);
   1611 __owur int SSL_use_certificate_chain_file(SSL *ssl, const char *file);
   1612 __owur STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
   1613 __owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
   1614                                                const char *file);
   1615 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
   1616                                        const char *dir);
   1617 
   1618 # if OPENSSL_API_COMPAT < 0x10100000L
   1619 #  define SSL_load_error_strings() \
   1620     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
   1621                      | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
   1622 # endif
   1623 
   1624 __owur const char *SSL_state_string(const SSL *s);
   1625 __owur const char *SSL_rstate_string(const SSL *s);
   1626 __owur const char *SSL_state_string_long(const SSL *s);
   1627 __owur const char *SSL_rstate_string_long(const SSL *s);
   1628 __owur long SSL_SESSION_get_time(const SSL_SESSION *s);
   1629 __owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
   1630 __owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
   1631 __owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
   1632 __owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
   1633 __owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
   1634 
   1635 __owur const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s);
   1636 __owur int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname);
   1637 void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
   1638                                     const unsigned char **alpn,
   1639                                     size_t *len);
   1640 __owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
   1641                                           const unsigned char *alpn,
   1642                                           size_t len);
   1643 __owur const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s);
   1644 __owur int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher);
   1645 __owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
   1646 __owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
   1647 void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
   1648                              size_t *len);
   1649 __owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
   1650 __owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
   1651                                           uint32_t max_early_data);
   1652 __owur int SSL_copy_session_id(SSL *to, const SSL *from);
   1653 __owur X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
   1654 __owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
   1655                                        const unsigned char *sid_ctx,
   1656                                        unsigned int sid_ctx_len);
   1657 __owur int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
   1658                                unsigned int sid_len);
   1659 __owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
   1660 
   1661 __owur SSL_SESSION *SSL_SESSION_new(void);
   1662 __owur SSL_SESSION *SSL_SESSION_dup(SSL_SESSION *src);
   1663 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
   1664                                         unsigned int *len);
   1665 const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
   1666                                                  unsigned int *len);
   1667 __owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
   1668 # ifndef OPENSSL_NO_STDIO
   1669 int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *ses);
   1670 # endif
   1671 int SSL_SESSION_print(BIO *fp, const SSL_SESSION *ses);
   1672 int SSL_SESSION_print_keylog(BIO *bp, const SSL_SESSION *x);
   1673 int SSL_SESSION_up_ref(SSL_SESSION *ses);
   1674 void SSL_SESSION_free(SSL_SESSION *ses);
   1675 __owur int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp);
   1676 __owur int SSL_set_session(SSL *to, SSL_SESSION *session);
   1677 int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
   1678 int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
   1679 __owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
   1680 __owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
   1681 __owur int SSL_has_matching_session_id(const SSL *s,
   1682                                        const unsigned char *id,
   1683                                        unsigned int id_len);
   1684 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
   1685                              long length);
   1686 
   1687 # ifdef HEADER_X509_H
   1688 __owur X509 *SSL_get_peer_certificate(const SSL *s);
   1689 # endif
   1690 
   1691 __owur STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);
   1692 
   1693 __owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
   1694 __owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
   1695 __owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
   1696 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
   1697 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
   1698 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
   1699                                       int (*cb) (X509_STORE_CTX *, void *),
   1700                                       void *arg);
   1701 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
   1702                          void *arg);
   1703 # ifndef OPENSSL_NO_RSA
   1704 __owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
   1705 __owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
   1706                                           long len);
   1707 # endif
   1708 __owur int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
   1709 __owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
   1710                                        const unsigned char *d, long len);
   1711 __owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
   1712 __owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
   1713                                         const unsigned char *d);
   1714 __owur int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
   1715                                     STACK_OF(X509) *chain, int override);
   1716 
   1717 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
   1718 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
   1719 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx);
   1720 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx);
   1721 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb);
   1722 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u);
   1723 pem_password_cb *SSL_get_default_passwd_cb(SSL *s);
   1724 void *SSL_get_default_passwd_cb_userdata(SSL *s);
   1725 
   1726 __owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
   1727 __owur int SSL_check_private_key(const SSL *ctx);
   1728 
   1729 __owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
   1730                                           const unsigned char *sid_ctx,
   1731                                           unsigned int sid_ctx_len);
   1732 
   1733 SSL *SSL_new(SSL_CTX *ctx);
   1734 int SSL_up_ref(SSL *s);
   1735 int SSL_is_dtls(const SSL *s);
   1736 __owur int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
   1737                                       unsigned int sid_ctx_len);
   1738 
   1739 __owur int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
   1740 __owur int SSL_set_purpose(SSL *ssl, int purpose);
   1741 __owur int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
   1742 __owur int SSL_set_trust(SSL *ssl, int trust);
   1743 
   1744 __owur int SSL_set1_host(SSL *s, const char *hostname);
   1745 __owur int SSL_add1_host(SSL *s, const char *hostname);
   1746 __owur const char *SSL_get0_peername(SSL *s);
   1747 void SSL_set_hostflags(SSL *s, unsigned int flags);
   1748 
   1749 __owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
   1750 __owur int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md,
   1751                                   uint8_t mtype, uint8_t ord);
   1752 __owur int SSL_dane_enable(SSL *s, const char *basedomain);
   1753 __owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
   1754                              uint8_t mtype, unsigned const char *data, size_t dlen);
   1755 __owur int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki);
   1756 __owur int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
   1757                               uint8_t *mtype, unsigned const char **data,
   1758                               size_t *dlen);
   1759 /*
   1760  * Bridge opacity barrier between libcrypt and libssl, also needed to support
   1761  * offline testing in test/danetest.c
   1762  */
   1763 SSL_DANE *SSL_get0_dane(SSL *ssl);
   1764 /*
   1765  * DANE flags
   1766  */
   1767 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
   1768 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
   1769 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
   1770 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
   1771 
   1772 __owur int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
   1773 __owur int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);
   1774 
   1775 __owur X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
   1776 __owur X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
   1777 
   1778 # ifndef OPENSSL_NO_SRP
   1779 int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name);
   1780 int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password);
   1781 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
   1782 int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
   1783                                         char *(*cb) (SSL *, void *));
   1784 int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
   1785                                           int (*cb) (SSL *, void *));
   1786 int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
   1787                                       int (*cb) (SSL *, int *, void *));
   1788 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
   1789 
   1790 int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
   1791                              BIGNUM *sa, BIGNUM *v, char *info);
   1792 int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
   1793                                 const char *grp);
   1794 
   1795 __owur BIGNUM *SSL_get_srp_g(SSL *s);
   1796 __owur BIGNUM *SSL_get_srp_N(SSL *s);
   1797 
   1798 __owur char *SSL_get_srp_username(SSL *s);
   1799 __owur char *SSL_get_srp_userinfo(SSL *s);
   1800 # endif
   1801 
   1802 /*
   1803  * ClientHello callback and helpers.
   1804  */
   1805 
   1806 # define SSL_CLIENT_HELLO_SUCCESS 1
   1807 # define SSL_CLIENT_HELLO_ERROR   0
   1808 # define SSL_CLIENT_HELLO_RETRY   (-1)
   1809 
   1810 typedef int (*SSL_client_hello_cb_fn) (SSL *s, int *al, void *arg);
   1811 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
   1812                                  void *arg);
   1813 int SSL_client_hello_isv2(SSL *s);
   1814 unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
   1815 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out);
   1816 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out);
   1817 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out);
   1818 size_t SSL_client_hello_get0_compression_methods(SSL *s,
   1819                                                  const unsigned char **out);
   1820 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen);
   1821 int SSL_client_hello_get0_ext(SSL *s, unsigned int type,
   1822                               const unsigned char **out, size_t *outlen);
   1823 
   1824 void SSL_certs_clear(SSL *s);
   1825 void SSL_free(SSL *ssl);
   1826 # ifdef OSSL_ASYNC_FD
   1827 /*
   1828  * Windows application developer has to include windows.h to use these.
   1829  */
   1830 __owur int SSL_waiting_for_async(SSL *s);
   1831 __owur int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds);
   1832 __owur int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd,
   1833                                      size_t *numaddfds, OSSL_ASYNC_FD *delfd,
   1834                                      size_t *numdelfds);
   1835 # endif
   1836 __owur int SSL_accept(SSL *ssl);
   1837 __owur int SSL_stateless(SSL *s);
   1838 __owur int SSL_connect(SSL *ssl);
   1839 __owur int SSL_read(SSL *ssl, void *buf, int num);
   1840 __owur int SSL_read_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
   1841 
   1842 # define SSL_READ_EARLY_DATA_ERROR   0
   1843 # define SSL_READ_EARLY_DATA_SUCCESS 1
   1844 # define SSL_READ_EARLY_DATA_FINISH  2
   1845 
   1846 __owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
   1847                                size_t *readbytes);
   1848 __owur int SSL_peek(SSL *ssl, void *buf, int num);
   1849 __owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
   1850 __owur int SSL_write(SSL *ssl, const void *buf, int num);
   1851 __owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
   1852 __owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
   1853                                 size_t *written);
   1854 long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg);
   1855 long SSL_callback_ctrl(SSL *, int, void (*)(void));
   1856 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg);
   1857 long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));
   1858 
   1859 # define SSL_EARLY_DATA_NOT_SENT    0
   1860 # define SSL_EARLY_DATA_REJECTED    1
   1861 # define SSL_EARLY_DATA_ACCEPTED    2
   1862 
   1863 __owur int SSL_get_early_data_status(const SSL *s);
   1864 
   1865 __owur int SSL_get_error(const SSL *s, int ret_code);
   1866 __owur const char *SSL_get_version(const SSL *s);
   1867 
   1868 /* This sets the 'default' SSL version that SSL_new() will create */
   1869 __owur int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);
   1870 
   1871 # ifndef OPENSSL_NO_SSL3_METHOD
   1872 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_method(void)) /* SSLv3 */
   1873 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_server_method(void))
   1874 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_client_method(void))
   1875 # endif
   1876 
   1877 #define SSLv23_method           TLS_method
   1878 #define SSLv23_server_method    TLS_server_method
   1879 #define SSLv23_client_method    TLS_client_method
   1880 
   1881 /* Negotiate highest available SSL/TLS version */
   1882 __owur const SSL_METHOD *TLS_method(void);
   1883 __owur const SSL_METHOD *TLS_server_method(void);
   1884 __owur const SSL_METHOD *TLS_client_method(void);
   1885 
   1886 # ifndef OPENSSL_NO_TLS1_METHOD
   1887 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_method(void)) /* TLSv1.0 */
   1888 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_server_method(void))
   1889 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_client_method(void))
   1890 # endif
   1891 
   1892 # ifndef OPENSSL_NO_TLS1_1_METHOD
   1893 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_method(void)) /* TLSv1.1 */
   1894 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_server_method(void))
   1895 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_client_method(void))
   1896 # endif
   1897 
   1898 # ifndef OPENSSL_NO_TLS1_2_METHOD
   1899 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_method(void)) /* TLSv1.2 */
   1900 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_server_method(void))
   1901 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_client_method(void))
   1902 # endif
   1903 
   1904 # ifndef OPENSSL_NO_DTLS1_METHOD
   1905 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_method(void)) /* DTLSv1.0 */
   1906 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_server_method(void))
   1907 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_client_method(void))
   1908 # endif
   1909 
   1910 # ifndef OPENSSL_NO_DTLS1_2_METHOD
   1911 /* DTLSv1.2 */
   1912 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_method(void))
   1913 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_server_method(void))
   1914 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_client_method(void))
   1915 # endif
   1916 
   1917 __owur const SSL_METHOD *DTLS_method(void); /* DTLS 1.0 and 1.2 */
   1918 __owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
   1919 __owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
   1920 
   1921 __owur size_t DTLS_get_data_mtu(const SSL *s);
   1922 
   1923 __owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
   1924 __owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
   1925 __owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
   1926 __owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
   1927 
   1928 __owur int SSL_do_handshake(SSL *s);
   1929 int SSL_key_update(SSL *s, int updatetype);
   1930 int SSL_get_key_update_type(const SSL *s);
   1931 int SSL_renegotiate(SSL *s);
   1932 int SSL_renegotiate_abbreviated(SSL *s);
   1933 __owur int SSL_renegotiate_pending(const SSL *s);
   1934 int SSL_shutdown(SSL *s);
   1935 __owur int SSL_verify_client_post_handshake(SSL *s);
   1936 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val);
   1937 void SSL_set_post_handshake_auth(SSL *s, int val);
   1938 
   1939 __owur const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
   1940 __owur const SSL_METHOD *SSL_get_ssl_method(const SSL *s);
   1941 __owur int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
   1942 __owur const char *SSL_alert_type_string_long(int value);
   1943 __owur const char *SSL_alert_type_string(int value);
   1944 __owur const char *SSL_alert_desc_string_long(int value);
   1945 __owur const char *SSL_alert_desc_string(int value);
   1946 
   1947 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
   1948 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
   1949 __owur const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
   1950 __owur const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
   1951 __owur int SSL_add1_to_CA_list(SSL *ssl, const X509 *x);
   1952 __owur int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x);
   1953 __owur const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
   1954 
   1955 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
   1956 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
   1957 __owur STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
   1958 __owur STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
   1959 __owur int SSL_add_client_CA(SSL *ssl, X509 *x);
   1960 __owur int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);
   1961 
   1962 void SSL_set_connect_state(SSL *s);
   1963 void SSL_set_accept_state(SSL *s);
   1964 
   1965 __owur long SSL_get_default_timeout(const SSL *s);
   1966 
   1967 # if OPENSSL_API_COMPAT < 0x10100000L
   1968 #  define SSL_library_init() OPENSSL_init_ssl(0, NULL)
   1969 # endif
   1970 
   1971 __owur char *SSL_CIPHER_description(const SSL_CIPHER *, char *buf, int size);
   1972 __owur STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk);
   1973 
   1974 __owur SSL *SSL_dup(SSL *ssl);
   1975 
   1976 __owur X509 *SSL_get_certificate(const SSL *ssl);
   1977 /*
   1978  * EVP_PKEY
   1979  */
   1980 struct evp_pkey_st *SSL_get_privatekey(const SSL *ssl);
   1981 
   1982 __owur X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
   1983 __owur EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
   1984 
   1985 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
   1986 __owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
   1987 void SSL_set_quiet_shutdown(SSL *ssl, int mode);
   1988 __owur int SSL_get_quiet_shutdown(const SSL *ssl);
   1989 void SSL_set_shutdown(SSL *ssl, int mode);
   1990 __owur int SSL_get_shutdown(const SSL *ssl);
   1991 __owur int SSL_version(const SSL *ssl);
   1992 __owur int SSL_client_version(const SSL *s);
   1993 __owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
   1994 __owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
   1995 __owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
   1996 __owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
   1997                                          const char *CApath);
   1998 # define SSL_get0_session SSL_get_session/* just peek at pointer */
   1999 __owur SSL_SESSION *SSL_get_session(const SSL *ssl);
   2000 __owur SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
   2001 __owur SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
   2002 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
   2003 void SSL_set_info_callback(SSL *ssl,
   2004                            void (*cb) (const SSL *ssl, int type, int val));
   2005 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL *ssl, int type,
   2006                                                int val);
   2007 __owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
   2008 
   2009 void SSL_set_verify_result(SSL *ssl, long v);
   2010 __owur long SSL_get_verify_result(const SSL *ssl);
   2011 __owur STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s);
   2012 
   2013 __owur size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
   2014                                     size_t outlen);
   2015 __owur size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
   2016                                     size_t outlen);
   2017 __owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
   2018                                          unsigned char *out, size_t outlen);
   2019 __owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
   2020                                        const unsigned char *in, size_t len);
   2021 uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
   2022 
   2023 #define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
   2024     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
   2025 __owur int SSL_set_ex_data(SSL *ssl, int idx, void *data);
   2026 void *SSL_get_ex_data(const SSL *ssl, int idx);
   2027 #define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
   2028     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
   2029 __owur int SSL_SESSION_set_ex_data(SSL_SESSION *ss, int idx, void *data);
   2030 void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss, int idx);
   2031 #define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
   2032     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
   2033 __owur int SSL_CTX_set_ex_data(SSL_CTX *ssl, int idx, void *data);
   2034 void *SSL_CTX_get_ex_data(const SSL_CTX *ssl, int idx);
   2035 
   2036 __owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
   2037 
   2038 # define SSL_CTX_sess_set_cache_size(ctx,t) \
   2039         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
   2040 # define SSL_CTX_sess_get_cache_size(ctx) \
   2041         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
   2042 # define SSL_CTX_set_session_cache_mode(ctx,m) \
   2043         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
   2044 # define SSL_CTX_get_session_cache_mode(ctx) \
   2045         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
   2046 
   2047 # define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
   2048 # define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
   2049 # define SSL_CTX_get_read_ahead(ctx) \
   2050         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
   2051 # define SSL_CTX_set_read_ahead(ctx,m) \
   2052         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
   2053 # define SSL_CTX_get_max_cert_list(ctx) \
   2054         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
   2055 # define SSL_CTX_set_max_cert_list(ctx,m) \
   2056         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
   2057 # define SSL_get_max_cert_list(ssl) \
   2058         SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
   2059 # define SSL_set_max_cert_list(ssl,m) \
   2060         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
   2061 
   2062 # define SSL_CTX_set_max_send_fragment(ctx,m) \
   2063         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
   2064 # define SSL_set_max_send_fragment(ssl,m) \
   2065         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
   2066 # define SSL_CTX_set_split_send_fragment(ctx,m) \
   2067         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
   2068 # define SSL_set_split_send_fragment(ssl,m) \
   2069         SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
   2070 # define SSL_CTX_set_max_pipelines(ctx,m) \
   2071         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
   2072 # define SSL_set_max_pipelines(ssl,m) \
   2073         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
   2074 
   2075 void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
   2076 void SSL_set_default_read_buffer_len(SSL *s, size_t len);
   2077 
   2078 # ifndef OPENSSL_NO_DH
   2079 /* NB: the |keylength| is only applicable when is_export is true */
   2080 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
   2081                                  DH *(*dh) (SSL *ssl, int is_export,
   2082                                             int keylength));
   2083 void SSL_set_tmp_dh_callback(SSL *ssl,
   2084                              DH *(*dh) (SSL *ssl, int is_export,
   2085                                         int keylength));
   2086 # endif
   2087 
   2088 __owur const COMP_METHOD *SSL_get_current_compression(const SSL *s);
   2089 __owur const COMP_METHOD *SSL_get_current_expansion(const SSL *s);
   2090 __owur const char *SSL_COMP_get_name(const COMP_METHOD *comp);
   2091 __owur const char *SSL_COMP_get0_name(const SSL_COMP *comp);
   2092 __owur int SSL_COMP_get_id(const SSL_COMP *comp);
   2093 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
   2094 __owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
   2095                                                              *meths);
   2096 # if OPENSSL_API_COMPAT < 0x10100000L
   2097 #  define SSL_COMP_free_compression_methods() while(0) continue
   2098 # endif
   2099 __owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
   2100 
   2101 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);
   2102 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
   2103 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
   2104 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
   2105                              int isv2format, STACK_OF(SSL_CIPHER) **sk,
   2106                              STACK_OF(SSL_CIPHER) **scsvs);
   2107 
   2108 /* TLS extensions functions */
   2109 __owur int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);
   2110 
   2111 __owur int SSL_set_session_ticket_ext_cb(SSL *s,
   2112                                          tls_session_ticket_ext_cb_fn cb,
   2113                                          void *arg);
   2114 
   2115 /* Pre-shared secret session resumption functions */
   2116 __owur int SSL_set_session_secret_cb(SSL *s,
   2117                                      tls_session_secret_cb_fn session_secret_cb,
   2118                                      void *arg);
   2119 
   2120 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
   2121                                                 int (*cb) (SSL *ssl,
   2122                                                            int
   2123                                                            is_forward_secure));
   2124 
   2125 void SSL_set_not_resumable_session_callback(SSL *ssl,
   2126                                             int (*cb) (SSL *ssl,
   2127                                                        int is_forward_secure));
   2128 
   2129 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
   2130                                          size_t (*cb) (SSL *ssl, int type,
   2131                                                        size_t len, void *arg));
   2132 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
   2133 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
   2134 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
   2135 
   2136 void SSL_set_record_padding_callback(SSL *ssl,
   2137                                     size_t (*cb) (SSL *ssl, int type,
   2138                                                   size_t len, void *arg));
   2139 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);
   2140 void *SSL_get_record_padding_callback_arg(const SSL *ssl);
   2141 int SSL_set_block_padding(SSL *ssl, size_t block_size);
   2142 
   2143 int SSL_set_num_tickets(SSL *s, size_t num_tickets);
   2144 size_t SSL_get_num_tickets(const SSL *s);
   2145 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
   2146 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
   2147 
   2148 # if OPENSSL_API_COMPAT < 0x10100000L
   2149 #  define SSL_cache_hit(s) SSL_session_reused(s)
   2150 # endif
   2151 
   2152 __owur int SSL_session_reused(const SSL *s);
   2153 __owur int SSL_is_server(const SSL *s);
   2154 
   2155 __owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
   2156 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
   2157 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
   2158 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
   2159 __owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
   2160                                              unsigned int flags);
   2161 __owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);
   2162 
   2163 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
   2164 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);
   2165 
   2166 __owur int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
   2167 __owur int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);
   2168 __owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd);
   2169 
   2170 void SSL_add_ssl_module(void);
   2171 int SSL_config(SSL *s, const char *name);
   2172 int SSL_CTX_config(SSL_CTX *ctx, const char *name);
   2173 
   2174 # ifndef OPENSSL_NO_SSL_TRACE
   2175 void SSL_trace(int write_p, int version, int content_type,
   2176                const void *buf, size_t len, SSL *ssl, void *arg);
   2177 # endif
   2178 
   2179 # ifndef OPENSSL_NO_SOCK
   2180 int DTLSv1_listen(SSL *s, BIO_ADDR *client);
   2181 # endif
   2182 
   2183 # ifndef OPENSSL_NO_CT
   2184 
   2185 /*
   2186  * A callback for verifying that the received SCTs are sufficient.
   2187  * Expected to return 1 if they are sufficient, otherwise 0.
   2188  * May return a negative integer if an error occurs.
   2189  * A connection should be aborted if the SCTs are deemed insufficient.
   2190  */
   2191 typedef int (*ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
   2192                                     const STACK_OF(SCT) *scts, void *arg);
   2193 
   2194 /*
   2195  * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
   2196  * the received SCTs.
   2197  * If the callback returns a non-positive result, the connection is terminated.
   2198  * Call this function before beginning a handshake.
   2199  * If a NULL |callback| is provided, SCT validation is disabled.
   2200  * |arg| is arbitrary userdata that will be passed to the callback whenever it
   2201  * is invoked. Ownership of |arg| remains with the caller.
   2202  *
   2203  * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
   2204  *       will be requested.
   2205  */
   2206 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
   2207                                    void *arg);
   2208 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
   2209                                        ssl_ct_validation_cb callback,
   2210                                        void *arg);
   2211 #define SSL_disable_ct(s) \
   2212         ((void) SSL_set_validation_callback((s), NULL, NULL))
   2213 #define SSL_CTX_disable_ct(ctx) \
   2214         ((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
   2215 
   2216 /*
   2217  * The validation type enumerates the available behaviours of the built-in SSL
   2218  * CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
   2219  * The underlying callback is a static function in libssl.
   2220  */
   2221 enum {
   2222     SSL_CT_VALIDATION_PERMISSIVE = 0,
   2223     SSL_CT_VALIDATION_STRICT
   2224 };
   2225 
   2226 /*
   2227  * Enable CT by setting up a callback that implements one of the built-in
   2228  * validation variants.  The SSL_CT_VALIDATION_PERMISSIVE variant always
   2229  * continues the handshake, the application can make appropriate decisions at
   2230  * handshake completion.  The SSL_CT_VALIDATION_STRICT variant requires at
   2231  * least one valid SCT, or else handshake termination will be requested.  The
   2232  * handshake may continue anyway if SSL_VERIFY_NONE is in effect.
   2233  */
   2234 int SSL_enable_ct(SSL *s, int validation_mode);
   2235 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
   2236 
   2237 /*
   2238  * Report whether a non-NULL callback is enabled.
   2239  */
   2240 int SSL_ct_is_enabled(const SSL *s);
   2241 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
   2242 
   2243 /* Gets the SCTs received from a connection */
   2244 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
   2245 
   2246 /*
   2247  * Loads the CT log list from the default location.
   2248  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
   2249  * the log information loaded from this file will be appended to the
   2250  * CTLOG_STORE.
   2251  * Returns 1 on success, 0 otherwise.
   2252  */
   2253 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
   2254 
   2255 /*
   2256  * Loads the CT log list from the specified file path.
   2257  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
   2258  * the log information loaded from this file will be appended to the
   2259  * CTLOG_STORE.
   2260  * Returns 1 on success, 0 otherwise.
   2261  */
   2262 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
   2263 
   2264 /*
   2265  * Sets the CT log list used by all SSL connections created from this SSL_CTX.
   2266  * Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
   2267  */
   2268 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs);
   2269 
   2270 /*
   2271  * Gets the CT log list used by all SSL connections created from this SSL_CTX.
   2272  * This will be NULL unless one of the following functions has been called:
   2273  * - SSL_CTX_set_default_ctlog_list_file
   2274  * - SSL_CTX_set_ctlog_list_file
   2275  * - SSL_CTX_set_ctlog_store
   2276  */
   2277 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx);
   2278 
   2279 # endif /* OPENSSL_NO_CT */
   2280 
   2281 /* What the "other" parameter contains in security callback */
   2282 /* Mask for type */
   2283 # define SSL_SECOP_OTHER_TYPE    0xffff0000
   2284 # define SSL_SECOP_OTHER_NONE    0
   2285 # define SSL_SECOP_OTHER_CIPHER  (1 << 16)
   2286 # define SSL_SECOP_OTHER_CURVE   (2 << 16)
   2287 # define SSL_SECOP_OTHER_DH      (3 << 16)
   2288 # define SSL_SECOP_OTHER_PKEY    (4 << 16)
   2289 # define SSL_SECOP_OTHER_SIGALG  (5 << 16)
   2290 # define SSL_SECOP_OTHER_CERT    (6 << 16)
   2291 
   2292 /* Indicated operation refers to peer key or certificate */
   2293 # define SSL_SECOP_PEER          0x1000
   2294 
   2295 /* Values for "op" parameter in security callback */
   2296 
   2297 /* Called to filter ciphers */
   2298 /* Ciphers client supports */
   2299 # define SSL_SECOP_CIPHER_SUPPORTED      (1 | SSL_SECOP_OTHER_CIPHER)
   2300 /* Cipher shared by client/server */
   2301 # define SSL_SECOP_CIPHER_SHARED         (2 | SSL_SECOP_OTHER_CIPHER)
   2302 /* Sanity check of cipher server selects */
   2303 # define SSL_SECOP_CIPHER_CHECK          (3 | SSL_SECOP_OTHER_CIPHER)
   2304 /* Curves supported by client */
   2305 # define SSL_SECOP_CURVE_SUPPORTED       (4 | SSL_SECOP_OTHER_CURVE)
   2306 /* Curves shared by client/server */
   2307 # define SSL_SECOP_CURVE_SHARED          (5 | SSL_SECOP_OTHER_CURVE)
   2308 /* Sanity check of curve server selects */
   2309 # define SSL_SECOP_CURVE_CHECK           (6 | SSL_SECOP_OTHER_CURVE)
   2310 /* Temporary DH key */
   2311 # define SSL_SECOP_TMP_DH                (7 | SSL_SECOP_OTHER_PKEY)
   2312 /* SSL/TLS version */
   2313 # define SSL_SECOP_VERSION               (9 | SSL_SECOP_OTHER_NONE)
   2314 /* Session tickets */
   2315 # define SSL_SECOP_TICKET                (10 | SSL_SECOP_OTHER_NONE)
   2316 /* Supported signature algorithms sent to peer */
   2317 # define SSL_SECOP_SIGALG_SUPPORTED      (11 | SSL_SECOP_OTHER_SIGALG)
   2318 /* Shared signature algorithm */
   2319 # define SSL_SECOP_SIGALG_SHARED         (12 | SSL_SECOP_OTHER_SIGALG)
   2320 /* Sanity check signature algorithm allowed */
   2321 # define SSL_SECOP_SIGALG_CHECK          (13 | SSL_SECOP_OTHER_SIGALG)
   2322 /* Used to get mask of supported public key signature algorithms */
   2323 # define SSL_SECOP_SIGALG_MASK           (14 | SSL_SECOP_OTHER_SIGALG)
   2324 /* Use to see if compression is allowed */
   2325 # define SSL_SECOP_COMPRESSION           (15 | SSL_SECOP_OTHER_NONE)
   2326 /* EE key in certificate */
   2327 # define SSL_SECOP_EE_KEY                (16 | SSL_SECOP_OTHER_CERT)
   2328 /* CA key in certificate */
   2329 # define SSL_SECOP_CA_KEY                (17 | SSL_SECOP_OTHER_CERT)
   2330 /* CA digest algorithm in certificate */
   2331 # define SSL_SECOP_CA_MD                 (18 | SSL_SECOP_OTHER_CERT)
   2332 /* Peer EE key in certificate */
   2333 # define SSL_SECOP_PEER_EE_KEY           (SSL_SECOP_EE_KEY | SSL_SECOP_PEER)
   2334 /* Peer CA key in certificate */
   2335 # define SSL_SECOP_PEER_CA_KEY           (SSL_SECOP_CA_KEY | SSL_SECOP_PEER)
   2336 /* Peer CA digest algorithm in certificate */
   2337 # define SSL_SECOP_PEER_CA_MD            (SSL_SECOP_CA_MD | SSL_SECOP_PEER)
   2338 
   2339 void SSL_set_security_level(SSL *s, int level);
   2340 __owur int SSL_get_security_level(const SSL *s);
   2341 void SSL_set_security_callback(SSL *s,
   2342                                int (*cb) (const SSL *s, const SSL_CTX *ctx,
   2343                                           int op, int bits, int nid,
   2344                                           void *other, void *ex));
   2345 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
   2346                                                 const SSL_CTX *ctx, int op,
   2347                                                 int bits, int nid, void *other,
   2348                                                 void *ex);
   2349 void SSL_set0_security_ex_data(SSL *s, void *ex);
   2350 __owur void *SSL_get0_security_ex_data(const SSL *s);
   2351 
   2352 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
   2353 __owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
   2354 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
   2355                                    int (*cb) (const SSL *s, const SSL_CTX *ctx,
   2356                                               int op, int bits, int nid,
   2357                                               void *other, void *ex));
   2358 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
   2359                                                           const SSL_CTX *ctx,
   2360                                                           int op, int bits,
   2361                                                           int nid,
   2362                                                           void *other,
   2363                                                           void *ex);
   2364 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex);
   2365 __owur void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx);
   2366 
   2367 /* OPENSSL_INIT flag 0x010000 reserved for internal use */
   2368 # define OPENSSL_INIT_NO_LOAD_SSL_STRINGS    0x00100000L
   2369 # define OPENSSL_INIT_LOAD_SSL_STRINGS       0x00200000L
   2370 
   2371 # define OPENSSL_INIT_SSL_DEFAULT \
   2372         (OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
   2373 
   2374 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
   2375 
   2376 # ifndef OPENSSL_NO_UNIT_TEST
   2377 __owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
   2378 # endif
   2379 
   2380 __owur int SSL_free_buffers(SSL *ssl);
   2381 __owur int SSL_alloc_buffers(SSL *ssl);
   2382 
   2383 /* Status codes passed to the decrypt session ticket callback. Some of these
   2384  * are for internal use only and are never passed to the callback. */
   2385 typedef int SSL_TICKET_STATUS;
   2386 
   2387 /* Support for ticket appdata */
   2388 /* fatal error, malloc failure */
   2389 # define SSL_TICKET_FATAL_ERR_MALLOC 0
   2390 /* fatal error, either from parsing or decrypting the ticket */
   2391 # define SSL_TICKET_FATAL_ERR_OTHER  1
   2392 /* No ticket present */
   2393 # define SSL_TICKET_NONE             2
   2394 /* Empty ticket present */
   2395 # define SSL_TICKET_EMPTY            3
   2396 /* the ticket couldn't be decrypted */
   2397 # define SSL_TICKET_NO_DECRYPT       4
   2398 /* a ticket was successfully decrypted */
   2399 # define SSL_TICKET_SUCCESS          5
   2400 /* same as above but the ticket needs to be renewed */
   2401 # define SSL_TICKET_SUCCESS_RENEW    6
   2402 
   2403 /* Return codes for the decrypt session ticket callback */
   2404 typedef int SSL_TICKET_RETURN;
   2405 
   2406 /* An error occurred */
   2407 #define SSL_TICKET_RETURN_ABORT             0
   2408 /* Do not use the ticket, do not send a renewed ticket to the client */
   2409 #define SSL_TICKET_RETURN_IGNORE            1
   2410 /* Do not use the ticket, send a renewed ticket to the client */
   2411 #define SSL_TICKET_RETURN_IGNORE_RENEW      2
   2412 /* Use the ticket, do not send a renewed ticket to the client */
   2413 #define SSL_TICKET_RETURN_USE               3
   2414 /* Use the ticket, send a renewed ticket to the client */
   2415 #define SSL_TICKET_RETURN_USE_RENEW         4
   2416 
   2417 typedef int (*SSL_CTX_generate_session_ticket_fn)(SSL *s, void *arg);
   2418 typedef SSL_TICKET_RETURN (*SSL_CTX_decrypt_session_ticket_fn)(SSL *s, SSL_SESSION *ss,
   2419                                                                const unsigned char *keyname,
   2420                                                                size_t keyname_length,
   2421                                                                SSL_TICKET_STATUS status,
   2422                                                                void *arg);
   2423 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
   2424                                   SSL_CTX_generate_session_ticket_fn gen_cb,
   2425                                   SSL_CTX_decrypt_session_ticket_fn dec_cb,
   2426                                   void *arg);
   2427 int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len);
   2428 int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len);
   2429 
   2430 extern const char SSL_version_str[];
   2431 
   2432 typedef unsigned int (*DTLS_timer_cb)(SSL *s, unsigned int timer_us);
   2433 
   2434 void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
   2435 
   2436 
   2437 typedef int (*SSL_allow_early_data_cb_fn)(SSL *s, void *arg);
   2438 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
   2439                                      SSL_allow_early_data_cb_fn cb,
   2440                                      void *arg);
   2441 void SSL_set_allow_early_data_cb(SSL *s,
   2442                                  SSL_allow_early_data_cb_fn cb,
   2443                                  void *arg);
   2444 
   2445 # ifdef  __cplusplus
   2446 }
   2447 # endif
   2448 #endif
   2449