include/openssl/ssl.h

   1 /*
   2  * Copyright 1995-2017 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/lhash.h>
  23 #  include <openssl/buffer.h>
  24 # endif
  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 # define TLS13_MAX_RESUMPTION_MASTER_LENGTH      64
  52
  53 /* The maximum number of encrypt/decrypt pipelines we can support */
  54 # define SSL_MAX_PIPELINES  32
  55
  56 /* text strings for the ciphers */
  57
  58 /* These are used to specify which ciphers to use and not to use */
  59
  60 # define SSL_TXT_LOW             "LOW"
  61 # define SSL_TXT_MEDIUM          "MEDIUM"
  62 # define SSL_TXT_HIGH            "HIGH"
  63 # define SSL_TXT_FIPS            "FIPS"
  64
  65 # define SSL_TXT_aNULL           "aNULL"
  66 # define SSL_TXT_eNULL           "eNULL"
  67 # define SSL_TXT_NULL            "NULL"
  68
  69 # define SSL_TXT_kRSA            "kRSA"
  70 # define SSL_TXT_kDHr            "kDHr"
  71 # define SSL_TXT_kDHd            "kDHd"
  72 # define SSL_TXT_kDH             "kDH"
  73 # define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
  74 # define SSL_TXT_kDHE            "kDHE"
  75 # define SSL_TXT_kECDHr          "kECDHr"
  76 # define SSL_TXT_kECDHe          "kECDHe"
  77 # define SSL_TXT_kECDH           "kECDH"
  78 # define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
  79 # define SSL_TXT_kECDHE          "kECDHE"
  80 # define SSL_TXT_kPSK            "kPSK"
  81 # define SSL_TXT_kRSAPSK         "kRSAPSK"
  82 # define SSL_TXT_kECDHEPSK       "kECDHEPSK"
  83 # define SSL_TXT_kDHEPSK         "kDHEPSK"
  84 # define SSL_TXT_kGOST           "kGOST"
  85 # define SSL_TXT_kSRP            "kSRP"
  86
  87 # define SSL_TXT_aRSA            "aRSA"
  88 # define SSL_TXT_aDSS            "aDSS"
  89 # define SSL_TXT_aDH             "aDH"
  90 # define SSL_TXT_aECDH           "aECDH"
  91 # define SSL_TXT_aECDSA          "aECDSA"
  92 # define SSL_TXT_aPSK            "aPSK"
  93 # define SSL_TXT_aGOST94         "aGOST94"
  94 # define SSL_TXT_aGOST01         "aGOST01"
  95 # define SSL_TXT_aGOST12         "aGOST12"
  96 # define SSL_TXT_aGOST           "aGOST"
  97 # define SSL_TXT_aSRP            "aSRP"
  98
  99 # define SSL_TXT_DSS             "DSS"
 100 # define SSL_TXT_DH              "DH"
 101 # define SSL_TXT_DHE             "DHE"/* same as "kDHE:-ADH" */
 102 # define SSL_TXT_EDH             "EDH"/* alias for DHE */
 103 # define SSL_TXT_ADH             "ADH"
 104 # define SSL_TXT_RSA             "RSA"
 105 # define SSL_TXT_ECDH            "ECDH"
 106 # define SSL_TXT_EECDH           "EECDH"/* alias for ECDHE" */
 107 # define SSL_TXT_ECDHE           "ECDHE"/* same as "kECDHE:-AECDH" */
 108 # define SSL_TXT_AECDH           "AECDH"
 109 # define SSL_TXT_ECDSA           "ECDSA"
 110 # define SSL_TXT_PSK             "PSK"
 111 # define SSL_TXT_SRP             "SRP"
 112
 113 # define SSL_TXT_DES             "DES"
 114 # define SSL_TXT_3DES            "3DES"
 115 # define SSL_TXT_RC4             "RC4"
 116 # define SSL_TXT_RC2             "RC2"
 117 # define SSL_TXT_IDEA            "IDEA"
 118 # define SSL_TXT_SEED            "SEED"
 119 # define SSL_TXT_AES128          "AES128"
 120 # define SSL_TXT_AES256          "AES256"
 121 # define SSL_TXT_AES             "AES"
 122 # define SSL_TXT_AES_GCM         "AESGCM"
 123 # define SSL_TXT_AES_CCM         "AESCCM"
 124 # define SSL_TXT_AES_CCM_8       "AESCCM8"
 125 # define SSL_TXT_CAMELLIA128     "CAMELLIA128"
 126 # define SSL_TXT_CAMELLIA256     "CAMELLIA256"
 127 # define SSL_TXT_CAMELLIA        "CAMELLIA"
 128 # define SSL_TXT_CHACHA20        "CHACHA20"
 129 # define SSL_TXT_GOST            "GOST89"
 130
 131 # define SSL_TXT_MD5             "MD5"
 132 # define SSL_TXT_SHA1            "SHA1"
 133 # define SSL_TXT_SHA             "SHA"/* same as "SHA1" */
 134 # define SSL_TXT_GOST94          "GOST94"
 135 # define SSL_TXT_GOST89MAC       "GOST89MAC"
 136 # define SSL_TXT_GOST12          "GOST12"
 137 # define SSL_TXT_GOST89MAC12     "GOST89MAC12"
 138 # define SSL_TXT_SHA256          "SHA256"
 139 # define SSL_TXT_SHA384          "SHA384"
 140
 141 # define SSL_TXT_SSLV3           "SSLv3"
 142 # define SSL_TXT_TLSV1           "TLSv1"
 143 # define SSL_TXT_TLSV1_1         "TLSv1.1"
 144 # define SSL_TXT_TLSV1_2         "TLSv1.2"
 145
 146 # define SSL_TXT_ALL             "ALL"
 147
 148 /*-
 149  * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
 150  * ciphers normally not being used.
 151  * Example: "RC4" will activate all ciphers using RC4 including ciphers
 152  * without authentication, which would normally disabled by DEFAULT (due
 153  * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
 154  * will make sure that it is also disabled in the specific selection.
 155  * COMPLEMENTOF* identifiers are portable between version, as adjustments
 156  * to the default cipher setup will also be included here.
 157  *
 158  * COMPLEMENTOFDEFAULT does not experience the same special treatment that
 159  * DEFAULT gets, as only selection is being done and no sorting as needed
 160  * for DEFAULT.
 161  */
 162 # define SSL_TXT_CMPALL          "COMPLEMENTOFALL"
 163 # define SSL_TXT_CMPDEF          "COMPLEMENTOFDEFAULT"
 164
 165 /*
 166  * The following cipher list is used by default. It also is substituted when
 167  * an application-defined cipher list string starts with 'DEFAULT'.
 168  */
 169 # define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
 170 /*
 171  * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
 172  * starts with a reasonable order, and all we have to do for DEFAULT is
 173  * throwing out anonymous and unencrypted ciphersuites! (The latter are not
 174  * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
 175  */
 176
 177 /* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
 178 # define SSL_SENT_SHUTDOWN       1
 179 # define SSL_RECEIVED_SHUTDOWN   2
 180
 181 #ifdef __cplusplus
 182 }
 183 #endif
 184
 185 #ifdef  __cplusplus
 186 extern "C" {
 187 #endif
 188
 189 # define SSL_FILETYPE_ASN1       X509_FILETYPE_ASN1
 190 # define SSL_FILETYPE_PEM        X509_FILETYPE_PEM
 191
 192 /*
 193  * This is needed to stop compilers complaining about the 'struct ssl_st *'
 194  * function parameters used to prototype callbacks in SSL_CTX.
 195  */
 196 typedef struct ssl_st *ssl_crock_st;
 197 typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
 198 typedef struct ssl_method_st SSL_METHOD;
 199 typedef struct ssl_cipher_st SSL_CIPHER;
 200 typedef struct ssl_session_st SSL_SESSION;
 201 typedef struct tls_sigalgs_st TLS_SIGALGS;
 202 typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
 203 typedef struct ssl_comp_st SSL_COMP;
 204
 205 STACK_OF(SSL_CIPHER);
 206 STACK_OF(SSL_COMP);
 207
 208 /* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
 209 typedef struct srtp_protection_profile_st {
 210     const char *name;
 211     unsigned long id;
 212 } SRTP_PROTECTION_PROFILE;
 213
 214 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
 215
 216 typedef int (*tls_session_ticket_ext_cb_fn) (SSL *s,
 217                                              const unsigned char *data,
 218                                              int len, void *arg);
 219 typedef int (*tls_session_secret_cb_fn) (SSL *s, void *secret,
 220                                          int *secret_len,
 221                                          STACK_OF(SSL_CIPHER) *peer_ciphers,
 222                                          const SSL_CIPHER **cipher, void *arg);
 223
 224 /* Extension context codes */
 225 /* This extension is only allowed in TLS */
 226 #define SSL_EXT_TLS_ONLY                        0x0001
 227 /* This extension is only allowed in DTLS */
 228 #define SSL_EXT_DTLS_ONLY                       0x0002
 229 /* Some extensions may be allowed in DTLS but we don't implement them for it */
 230 #define SSL_EXT_TLS_IMPLEMENTATION_ONLY         0x0004
 231 /* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
 232 #define SSL_EXT_SSL3_ALLOWED                    0x0008
 233 /* Extension is only defined for TLS1.2 and below */
 234 #define SSL_EXT_TLS1_2_AND_BELOW_ONLY           0x0010
 235 /* Extension is only defined for TLS1.3 and above */
 236 #define SSL_EXT_TLS1_3_ONLY                     0x0020
 237 /* Ignore this extension during parsing if we are resuming */
 238 #define SSL_EXT_IGNORE_ON_RESUMPTION            0x0040
 239 #define SSL_EXT_CLIENT_HELLO                    0x0080
 240 /* Really means TLS1.2 or below */
 241 #define SSL_EXT_TLS1_2_SERVER_HELLO             0x0100
 242 #define SSL_EXT_TLS1_3_SERVER_HELLO             0x0200
 243 #define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS     0x0400
 244 #define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST      0x0800
 245 #define SSL_EXT_TLS1_3_CERTIFICATE              0x1000
 246 #define SSL_EXT_TLS1_3_NEW_SESSION_TICKET       0x2000
 247 #define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST      0x4000
 248
 249 /* Typedefs for handling custom extensions */
 250
 251 typedef int (*custom_ext_add_cb) (SSL *s, unsigned int ext_type,
 252                                   const unsigned char **out,
 253                                   size_t *outlen, int *al, void *add_arg);
 254
 255 typedef void (*custom_ext_free_cb) (SSL *s, unsigned int ext_type,
 256                                     const unsigned char *out, void *add_arg);
 257
 258 typedef int (*custom_ext_parse_cb) (SSL *s, unsigned int ext_type,
 259                                     const unsigned char *in,
 260                                     size_t inlen, int *al, void *parse_arg);
 261
 262
 263 typedef int (*SSL_custom_ext_add_cb_ex) (SSL *s, unsigned int ext_type,
 264                                          unsigned int context,
 265                                          const unsigned char **out,
 266                                          size_t *outlen, X509 *x,
 267                                          size_t chainidx,
 268                                          int *al, void *add_arg);
 269
 270 typedef void (*SSL_custom_ext_free_cb_ex) (SSL *s, unsigned int ext_type,
 271                                            unsigned int context,
 272                                            const unsigned char *out,
 273                                            void *add_arg);
 274
 275 typedef int (*SSL_custom_ext_parse_cb_ex) (SSL *s, unsigned int ext_type,
 276                                            unsigned int context,
 277                                            const unsigned char *in,
 278                                            size_t inlen, X509 *x,
 279                                            size_t chainidx,
 280                                            int *al, void *parse_arg);
 281
 282 /* Typedef for verification callback */
 283 typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
 284
 285 /*
 286  * Some values are reserved until OpenSSL 1.2.0 because they were previously
 287  * included in SSL_OP_ALL in a 1.1.x release.
 288  *
 289  * Reserved value (until OpenSSL 1.2.0)                  0x00000001U
 290  * Reserved value (until OpenSSL 1.2.0)                  0x00000002U
 291  */
 292 /* Allow initial connection to servers that don't support RI */
 293 # define SSL_OP_LEGACY_SERVER_CONNECT                    0x00000004U
 294
 295 /* Reserved value (until OpenSSL 1.2.0)                  0x00000008U */
 296 # define SSL_OP_TLSEXT_PADDING                           0x00000010U
 297 /* Reserved value (until OpenSSL 1.2.0)                  0x00000020U */
 298 # define SSL_OP_SAFARI_ECDHE_ECDSA_BUG                   0x00000040U
 299 /*
 300  * Reserved value (until OpenSSL 1.2.0)                  0x00000080U
 301  * Reserved value (until OpenSSL 1.2.0)                  0x00000100U
 302  * Reserved value (until OpenSSL 1.2.0)                  0x00000200U
 303  */
 304
 305 /* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
 306 # define SSL_OP_ALLOW_NO_DHE_KEX                         0x00000400U
 307
 308 /*
 309  * Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added in
 310  * OpenSSL 0.9.6d.  Usually (depending on the application protocol) the
 311  * workaround is not needed.  Unfortunately some broken SSL/TLS
 312  * implementations cannot handle it at all, which is why we include it in
 313  * SSL_OP_ALL. Added in 0.9.6e
 314  */
 315 # define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              0x00000800U
 316
 317 /* DTLS options */
 318 # define SSL_OP_NO_QUERY_MTU                             0x00001000U
 319 /* Turn on Cookie Exchange (on relevant for servers) */
 320 # define SSL_OP_COOKIE_EXCHANGE                          0x00002000U
 321 /* Don't use RFC4507 ticket extension */
 322 # define SSL_OP_NO_TICKET                                0x00004000U
 323 # ifndef OPENSSL_NO_DTLS1_METHOD
 324 /* Use Cisco's "speshul" version of DTLS_BAD_VER
 325  * (only with deprecated DTLSv1_client_method())  */
 326 #  define SSL_OP_CISCO_ANYCONNECT                        0x00008000U
 327 # endif
 328
 329 /* As server, disallow session resumption on renegotiation */
 330 # define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION   0x00010000U
 331 /* Don't use compression even if supported */
 332 # define SSL_OP_NO_COMPRESSION                           0x00020000U
 333 /* Permit unsafe legacy renegotiation */
 334 # define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION        0x00040000U
 335 /* Disable encrypt-then-mac */
 336 # define SSL_OP_NO_ENCRYPT_THEN_MAC                      0x00080000U
 337 /*
 338  * Set on servers to choose the cipher according to the server's preferences
 339  */
 340 # define SSL_OP_CIPHER_SERVER_PREFERENCE                 0x00400000U
 341 /*
 342  * If set, a server will allow a client to issue a SSLv3.0 version number as
 343  * latest version supported in the premaster secret, even when TLSv1.0
 344  * (version 3.1) was announced in the client hello. Normally this is
 345  * forbidden to prevent version rollback attacks.
 346  */
 347 # define SSL_OP_TLS_ROLLBACK_BUG                         0x00800000U
 348
 349 # define SSL_OP_NO_SSLv3                                 0x02000000U
 350 # define SSL_OP_NO_TLSv1                                 0x04000000U
 351 # define SSL_OP_NO_TLSv1_2                               0x08000000U
 352 # define SSL_OP_NO_TLSv1_1                               0x10000000U
 353 # define SSL_OP_NO_TLSv1_3                               0x20000000U
 354
 355 # define SSL_OP_NO_DTLSv1                                0x04000000U
 356 # define SSL_OP_NO_DTLSv1_2                              0x08000000U
 357
 358 # define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv3|\
 359         SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2|SSL_OP_NO_TLSv1_3)
 360 # define SSL_OP_NO_DTLS_MASK (SSL_OP_NO_DTLSv1|SSL_OP_NO_DTLSv1_2)
 361
 362 /* Disallow all renegotiation */
 363 # define SSL_OP_NO_RENEGOTIATION                         0x40000000U
 364
 365 /*
 366  * Make server add server-hello extension from early version of cryptopro
 367  * draft, when GOST ciphersuite is negotiated. Required for interoperability
 368  * with CryptoPro CSP 3.x
 369  */
 370 # define SSL_OP_CRYPTOPRO_TLSEXT_BUG                     0x80000000U
 371
 372 /*
 373  * SSL_OP_ALL: various bug workarounds that should be rather harmless.
 374  * This used to be 0x000FFFFFL before 0.9.7.
 375  * This used to be 0x80000BFFU before 1.1.1.
 376  */
 377 # define SSL_OP_ALL        (SSL_OP_CRYPTOPRO_TLSEXT_BUG|\
 378                             SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS|\
 379                             SSL_OP_LEGACY_SERVER_CONNECT|\
 380                             SSL_OP_TLSEXT_PADDING|\
 381                             SSL_OP_SAFARI_ECDHE_ECDSA_BUG)
 382
 383 /* OBSOLETE OPTIONS: retained for compatibility */
 384
 385 /* Removed from OpenSSL 1.1.0. Was 0x00000001L */
 386 /* Related to removed SSLv2. */
 387 # define SSL_OP_MICROSOFT_SESS_ID_BUG                    0x0
 388 /* Removed from OpenSSL 1.1.0. Was 0x00000002L */
 389 /* Related to removed SSLv2. */
 390 # define SSL_OP_NETSCAPE_CHALLENGE_BUG                   0x0
 391 /* Removed from OpenSSL 0.9.8q and 1.0.0c. Was 0x00000008L */
 392 /* Dead forever, see CVE-2010-4180 */
 393 # define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG         0x0
 394 /* Removed from OpenSSL 1.0.1h and 1.0.2. Was 0x00000010L */
 395 /* Refers to ancient SSLREF and SSLv2. */
 396 # define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG              0x0
 397 /* Removed from OpenSSL 1.1.0. Was 0x00000020 */
 398 # define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER               0x0
 399 /* Removed from OpenSSL 0.9.7h and 0.9.8b. Was 0x00000040L */
 400 # define SSL_OP_MSIE_SSLV2_RSA_PADDING                   0x0
 401 /* Removed from OpenSSL 1.1.0. Was 0x00000080 */
 402 /* Ancient SSLeay version. */
 403 # define SSL_OP_SSLEAY_080_CLIENT_DH_BUG                 0x0
 404 /* Removed from OpenSSL 1.1.0. Was 0x00000100L */
 405 # define SSL_OP_TLS_D5_BUG                               0x0
 406 /* Removed from OpenSSL 1.1.0. Was 0x00000200L */
 407 # define SSL_OP_TLS_BLOCK_PADDING_BUG                    0x0
 408 /* Removed from OpenSSL 1.1.0. Was 0x00080000L */
 409 # define SSL_OP_SINGLE_ECDH_USE                          0x0
 410 /* Removed from OpenSSL 1.1.0. Was 0x00100000L */
 411 # define SSL_OP_SINGLE_DH_USE                            0x0
 412 /* Removed from OpenSSL 1.0.1k and 1.0.2. Was 0x00200000L */
 413 # define SSL_OP_EPHEMERAL_RSA                            0x0
 414 /* Removed from OpenSSL 1.1.0. Was 0x01000000L */
 415 # define SSL_OP_NO_SSLv2                                 0x0
 416 /* Removed from OpenSSL 1.0.1. Was 0x08000000L */
 417 # define SSL_OP_PKCS1_CHECK_1                            0x0
 418 /* Removed from OpenSSL 1.0.1. Was 0x10000000L */
 419 # define SSL_OP_PKCS1_CHECK_2                            0x0
 420 /* Removed from OpenSSL 1.1.0. Was 0x20000000L */
 421 # define SSL_OP_NETSCAPE_CA_DN_BUG                       0x0
 422 /* Removed from OpenSSL 1.1.0. Was 0x40000000L */
 423 # define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG          0x0
 424
 425 /*
 426  * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
 427  * when just a single record has been written):
 428  */
 429 # define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001U
 430 /*
 431  * Make it possible to retry SSL_write() with changed buffer location (buffer
 432  * contents must stay the same!); this is not the default to avoid the
 433  * misconception that non-blocking SSL_write() behaves like non-blocking
 434  * write():
 435  */
 436 # define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
 437 /*
 438  * Never bother the application with retries if the transport is blocking:
 439  */
 440 # define SSL_MODE_AUTO_RETRY 0x00000004U
 441 /* Don't attempt to automatically build certificate chain */
 442 # define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
 443 /*
 444  * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
 445  * TLS only.) Released buffers are freed.
 446  */
 447 # define SSL_MODE_RELEASE_BUFFERS 0x00000010U
 448 /*
 449  * Send the current time in the Random fields of the ClientHello and
 450  * ServerHello records for compatibility with hypothetical implementations
 451  * that require it.
 452  */
 453 # define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
 454 # define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
 455 /*
 456  * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
 457  * that reconnect with a downgraded protocol version; see
 458  * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
 459  * application attempts a normal handshake. Only use this in explicit
 460  * fallback retries, following the guidance in
 461  * draft-ietf-tls-downgrade-scsv-00.
 462  */
 463 # define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
 464 /*
 465  * Support Asynchronous operation
 466  */
 467 # define SSL_MODE_ASYNC 0x00000100U
 468
 469 /* Cert related flags */
 470 /*
 471  * Many implementations ignore some aspects of the TLS standards such as
 472  * enforcing certificate chain algorithms. When this is set we enforce them.
 473  */
 474 # define SSL_CERT_FLAG_TLS_STRICT                0x00000001U
 475
 476 /* Suite B modes, takes same values as certificate verify flags */
 477 # define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY       0x10000
 478 /* Suite B 192 bit only mode */
 479 # define SSL_CERT_FLAG_SUITEB_192_LOS            0x20000
 480 /* Suite B 128 bit mode allowing 192 bit algorithms */
 481 # define SSL_CERT_FLAG_SUITEB_128_LOS            0x30000
 482
 483 /* Perform all sorts of protocol violations for testing purposes */
 484 # define SSL_CERT_FLAG_BROKEN_PROTOCOL           0x10000000
 485
 486 /* Flags for building certificate chains */
 487 /* Treat any existing certificates as untrusted CAs */
 488 # define SSL_BUILD_CHAIN_FLAG_UNTRUSTED          0x1
 489 /* Don't include root CA in chain */
 490 # define SSL_BUILD_CHAIN_FLAG_NO_ROOT            0x2
 491 /* Just check certificates already there */
 492 # define SSL_BUILD_CHAIN_FLAG_CHECK              0x4
 493 /* Ignore verification errors */
 494 # define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR       0x8
 495 /* Clear verification errors from queue */
 496 # define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR        0x10
 497
 498 /* Flags returned by SSL_check_chain */
 499 /* Certificate can be used with this session */
 500 # define CERT_PKEY_VALID         0x1
 501 /* Certificate can also be used for signing */
 502 # define CERT_PKEY_SIGN          0x2
 503 /* EE certificate signing algorithm OK */
 504 # define CERT_PKEY_EE_SIGNATURE  0x10
 505 /* CA signature algorithms OK */
 506 # define CERT_PKEY_CA_SIGNATURE  0x20
 507 /* EE certificate parameters OK */
 508 # define CERT_PKEY_EE_PARAM      0x40
 509 /* CA certificate parameters OK */
 510 # define CERT_PKEY_CA_PARAM      0x80
 511 /* Signing explicitly allowed as opposed to SHA1 fallback */
 512 # define CERT_PKEY_EXPLICIT_SIGN 0x100
 513 /* Client CA issuer names match (always set for server cert) */
 514 # define CERT_PKEY_ISSUER_NAME   0x200
 515 /* Cert type matches client types (always set for server cert) */
 516 # define CERT_PKEY_CERT_TYPE     0x400
 517 /* Cert chain suitable to Suite B */
 518 # define CERT_PKEY_SUITEB        0x800
 519
 520 # define SSL_CONF_FLAG_CMDLINE           0x1
 521 # define SSL_CONF_FLAG_FILE              0x2
 522 # define SSL_CONF_FLAG_CLIENT            0x4
 523 # define SSL_CONF_FLAG_SERVER            0x8
 524 # define SSL_CONF_FLAG_SHOW_ERRORS       0x10
 525 # define SSL_CONF_FLAG_CERTIFICATE       0x20
 526 # define SSL_CONF_FLAG_REQUIRE_PRIVATE   0x40
 527 /* Configuration value types */
 528 # define SSL_CONF_TYPE_UNKNOWN           0x0
 529 # define SSL_CONF_TYPE_STRING            0x1
 530 # define SSL_CONF_TYPE_FILE              0x2
 531 # define SSL_CONF_TYPE_DIR               0x3
 532 # define SSL_CONF_TYPE_NONE              0x4
 533
 534 /*
 535  * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
 536  * cannot be used to clear bits.
 537  */
 538
 539 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx);
 540 unsigned long SSL_get_options(const SSL* s);
 541 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op);
 542 unsigned long SSL_clear_options(SSL *s, unsigned long op);
 543 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op);
 544 unsigned long SSL_set_options(SSL *s, unsigned long op);
 545
 546 # define SSL_CTX_set_mode(ctx,op) \
 547         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
 548 # define SSL_CTX_clear_mode(ctx,op) \
 549         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
 550 # define SSL_CTX_get_mode(ctx) \
 551         SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
 552 # define SSL_clear_mode(ssl,op) \
 553         SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
 554 # define SSL_set_mode(ssl,op) \
 555         SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
 556 # define SSL_get_mode(ssl) \
 557         SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
 558 # define SSL_set_mtu(ssl, mtu) \
 559         SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
 560 # define DTLS_set_link_mtu(ssl, mtu) \
 561         SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
 562 # define DTLS_get_link_min_mtu(ssl) \
 563         SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
 564
 565 # define SSL_get_secure_renegotiation_support(ssl) \
 566         SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
 567
 568 # ifndef OPENSSL_NO_HEARTBEATS
 569 #  define SSL_heartbeat(ssl) \
 570         SSL_ctrl((ssl),SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT,0,NULL)
 571 # endif
 572
 573 # define SSL_CTX_set_cert_flags(ctx,op) \
 574         SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
 575 # define SSL_set_cert_flags(s,op) \
 576         SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
 577 # define SSL_CTX_clear_cert_flags(ctx,op) \
 578         SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
 579 # define SSL_clear_cert_flags(s,op) \
 580         SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
 581
 582 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
 583                               void (*cb) (int write_p, int version,
 584                                           int content_type, const void *buf,
 585                                           size_t len, SSL *ssl, void *arg));
 586 void SSL_set_msg_callback(SSL *ssl,
 587                           void (*cb) (int write_p, int version,
 588                                       int content_type, const void *buf,
 589                                       size_t len, SSL *ssl, void *arg));
 590 # define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
 591 # define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
 592
 593 # define SSL_get_extms_support(s) \
 594         SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
 595
 596 # ifndef OPENSSL_NO_SRP
 597
 598 /* see tls_srp.c */
 599 __owur int SSL_SRP_CTX_init(SSL *s);
 600 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
 601 int SSL_SRP_CTX_free(SSL *ctx);
 602 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
 603 __owur int SSL_srp_server_param_with_username(SSL *s, int *ad);
 604 __owur int SRP_Calc_A_param(SSL *s);
 605
 606 # endif
 607
 608 /* 100k max cert list */
 609 # define SSL_MAX_CERT_LIST_DEFAULT 1024*100
 610
 611 # define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT      (1024*20)
 612
 613 /*
 614  * This callback type is used inside SSL_CTX, SSL, and in the functions that
 615  * set them. It is used to override the generation of SSL/TLS session IDs in
 616  * a server. Return value should be zero on an error, non-zero to proceed.
 617  * Also, callbacks should themselves check if the id they generate is unique
 618  * otherwise the SSL handshake will fail with an error - callbacks can do
 619  * this using the 'ssl' value they're passed by;
 620  * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
 621  * is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
 622  * bytes. The callback can alter this length to be less if desired. It is
 623  * also an error for the callback to set the size to zero.
 624  */
 625 typedef int (*GEN_SESSION_CB) (SSL *ssl, unsigned char *id,
 626                                unsigned int *id_len);
 627
 628 # define SSL_SESS_CACHE_OFF                      0x0000
 629 # define SSL_SESS_CACHE_CLIENT                   0x0001
 630 # define SSL_SESS_CACHE_SERVER                   0x0002
 631 # define SSL_SESS_CACHE_BOTH     (SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
 632 # define SSL_SESS_CACHE_NO_AUTO_CLEAR            0x0080
 633 /* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
 634 # define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP       0x0100
 635 # define SSL_SESS_CACHE_NO_INTERNAL_STORE        0x0200
 636 # define SSL_SESS_CACHE_NO_INTERNAL \
 637         (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)
 638
 639 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
 640 # define SSL_CTX_sess_number(ctx) \
 641         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
 642 # define SSL_CTX_sess_connect(ctx) \
 643         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
 644 # define SSL_CTX_sess_connect_good(ctx) \
 645         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
 646 # define SSL_CTX_sess_connect_renegotiate(ctx) \
 647         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
 648 # define SSL_CTX_sess_accept(ctx) \
 649         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
 650 # define SSL_CTX_sess_accept_renegotiate(ctx) \
 651         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
 652 # define SSL_CTX_sess_accept_good(ctx) \
 653         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
 654 # define SSL_CTX_sess_hits(ctx) \
 655         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
 656 # define SSL_CTX_sess_cb_hits(ctx) \
 657         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
 658 # define SSL_CTX_sess_misses(ctx) \
 659         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
 660 # define SSL_CTX_sess_timeouts(ctx) \
 661         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
 662 # define SSL_CTX_sess_cache_full(ctx) \
 663         SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
 664
 665 void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
 666                              int (*new_session_cb) (struct ssl_st *ssl,
 667                                                     SSL_SESSION *sess));
 668 int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
 669                                               SSL_SESSION *sess);
 670 void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
 671                                 void (*remove_session_cb) (struct ssl_ctx_st
 672                                                            *ctx,
 673                                                            SSL_SESSION
 674                                                            *sess));
 675 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (struct ssl_ctx_st *ctx,
 676                                                   SSL_SESSION *sess);
 677 void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
 678                              SSL_SESSION *(*get_session_cb) (struct ssl_st
 679                                                              *ssl,
 680                                                              const unsigned char
 681                                                              *data, int len,
 682                                                              int *copy));
 683 SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (struct ssl_st *ssl,
 684                                                        const unsigned char *data,
 685                                                        int len, int *copy);
 686 void SSL_CTX_set_info_callback(SSL_CTX *ctx,
 687                                void (*cb) (const SSL *ssl, int type,
 688                                            int val));
 689 void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type,
 690                                                  int val);
 691 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
 692                                 int (*client_cert_cb) (SSL *ssl, X509 **x509,
 693                                                        EVP_PKEY **pkey));
 694 int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509,
 695                                                  EVP_PKEY **pkey);
 696 # ifndef OPENSSL_NO_ENGINE
 697 __owur int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
 698 # endif
 699 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
 700                                     int (*app_gen_cookie_cb) (SSL *ssl,
 701                                                               unsigned char
 702                                                               *cookie,
 703                                                               unsigned int
 704                                                               *cookie_len));
 705 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
 706                                   int (*app_verify_cookie_cb) (SSL *ssl,
 707                                                                const unsigned char
 708                                                                *cookie,
 709                                                                unsigned int
 710                                                                cookie_len));
 711 # ifndef OPENSSL_NO_NEXTPROTONEG
 712
 713 typedef int (*SSL_CTX_npn_advertised_cb_func)(SSL *ssl,
 714                                               const unsigned char **out,
 715                                               unsigned int *outlen,
 716                                               void *arg);
 717 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
 718                                    SSL_CTX_npn_advertised_cb_func cb,
 719                                    void *arg);
 720 #  define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
 721
 722 typedef int (*SSL_CTX_npn_select_cb_func)(SSL *s,
 723                                           unsigned char **out,
 724                                           unsigned char *outlen,
 725                                           const unsigned char *in,
 726                                           unsigned int inlen,
 727                                           void *arg);
 728 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
 729                                       SSL_CTX_npn_select_cb_func cb,
 730                                       void *arg);
 731 #  define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
 732
 733 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
 734                                     unsigned *len);
 735 #  define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
 736 # endif
 737
 738 __owur int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
 739                           const unsigned char *in, unsigned int inlen,
 740                           const unsigned char *client,
 741                           unsigned int client_len);
 742
 743 # define OPENSSL_NPN_UNSUPPORTED 0
 744 # define OPENSSL_NPN_NEGOTIATED  1
 745 # define OPENSSL_NPN_NO_OVERLAP  2
 746
 747 __owur int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
 748                                    unsigned int protos_len);
 749 __owur int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
 750                                unsigned int protos_len);
 751 typedef int (*SSL_CTX_alpn_select_cb_func)(SSL *ssl,
 752                                            const unsigned char **out,
 753                                            unsigned char *outlen,
 754                                            const unsigned char *in,
 755                                            unsigned int inlen,
 756                                            void *arg);
 757 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
 758                                 SSL_CTX_alpn_select_cb_func cb,
 759                                 void *arg);
 760 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
 761                             unsigned int *len);
 762
 763 # ifndef OPENSSL_NO_PSK
 764 /*
 765  * the maximum length of the buffer given to callbacks containing the
 766  * resulting identity/psk
 767  */
 768 #  define PSK_MAX_IDENTITY_LEN 128
 769 #  define PSK_MAX_PSK_LEN 256
 770 typedef unsigned int (*SSL_psk_client_cb_func)(SSL *ssl,
 771                                                const char *hint,
 772                                                char *identity,
 773                                                unsigned int max_identity_len,
 774                                                unsigned char *psk,
 775                                                unsigned int max_psk_len);
 776 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
 777 void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
 778
 779 typedef unsigned int (*SSL_psk_server_cb_func)(SSL *ssl,
 780                                                const char *identity,
 781                                                unsigned char *psk,
 782                                                unsigned int max_psk_len);
 783 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
 784 void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
 785
 786 __owur int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
 787 __owur int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
 788 const char *SSL_get_psk_identity_hint(const SSL *s);
 789 const char *SSL_get_psk_identity(const SSL *s);
 790 # endif
 791
 792 typedef int (*SSL_psk_find_session_cb_func)(SSL *ssl,
 793                                             const unsigned char *identity,
 794                                             size_t identity_len,
 795                                             SSL_SESSION **sess);
 796 typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
 797                                            const unsigned char **id,
 798                                            size_t *idlen,
 799                                            SSL_SESSION **sess);
 800
 801 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
 802 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
 803                                            SSL_psk_find_session_cb_func cb);
 804 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
 805 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
 806                                           SSL_psk_use_session_cb_func cb);
 807
 808 /* Register callbacks to handle custom TLS Extensions for client or server. */
 809
 810 __owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
 811                                          unsigned int ext_type);
 812
 813 __owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
 814                                   custom_ext_add_cb add_cb,
 815                                   custom_ext_free_cb free_cb,
 816                                   void *add_arg,
 817                                   custom_ext_parse_cb parse_cb,
 818                                   void *parse_arg);
 819
 820 __owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
 821                                   custom_ext_add_cb add_cb,
 822                                   custom_ext_free_cb free_cb,
 823                                   void *add_arg,
 824                                   custom_ext_parse_cb parse_cb,
 825                                   void *parse_arg);
 826
 827 __owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
 828                                   unsigned int context,
 829                                   SSL_custom_ext_add_cb_ex add_cb,
 830                                   SSL_custom_ext_free_cb_ex free_cb,
 831                                   void *add_arg,
 832                                   SSL_custom_ext_parse_cb_ex parse_cb,
 833                                   void *parse_arg);
 834
 835 __owur int SSL_extension_supported(unsigned int ext_type);
 836
 837 # define SSL_NOTHING            1
 838 # define SSL_WRITING            2
 839 # define SSL_READING            3
 840 # define SSL_X509_LOOKUP        4
 841 # define SSL_ASYNC_PAUSED       5
 842 # define SSL_ASYNC_NO_JOBS      6
 843 # define SSL_EARLY_WORK         7
 844
 845 /* These will only be used when doing non-blocking IO */
 846 # define SSL_want_nothing(s)     (SSL_want(s) == SSL_NOTHING)
 847 # define SSL_want_read(s)        (SSL_want(s) == SSL_READING)
 848 # define SSL_want_write(s)       (SSL_want(s) == SSL_WRITING)
 849 # define SSL_want_x509_lookup(s) (SSL_want(s) == SSL_X509_LOOKUP)
 850 # define SSL_want_async(s)       (SSL_want(s) == SSL_ASYNC_PAUSED)
 851 # define SSL_want_async_job(s)   (SSL_want(s) == SSL_ASYNC_NO_JOBS)
 852 # define SSL_want_early(s)       (SSL_want(s) == SSL_EARLY_WORK)
 853
 854 # define SSL_MAC_FLAG_READ_MAC_STREAM 1
 855 # define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
 856
 857 /*
 858  * A callback for logging out TLS key material. This callback should log out
 859  * |line| followed by a newline.
 860  */
 861 typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);
 862
 863 /*
 864  * SSL_CTX_set_keylog_callback configures a callback to log key material. This
 865  * is intended for debugging use with tools like Wireshark. The cb function
 866  * should log line followed by a newline.
 867  */
 868 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
 869
 870 /*
 871  * SSL_CTX_get_keylog_callback returns the callback configured by
 872  * SSL_CTX_set_keylog_callback.
 873  */
 874 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
 875
 876 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
 877 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
 878 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
 879 uint32_t SSL_get_max_early_data(const SSL *s);
 880
 881 #ifdef __cplusplus
 882 }
 883 #endif
 884
 885 # include <openssl/ssl2.h>
 886 # include <openssl/ssl3.h>
 887 # include <openssl/tls1.h>      /* This is mostly sslv3 with a few tweaks */
 888 # include <openssl/dtls1.h>     /* Datagram TLS */
 889 # include <openssl/srtp.h>      /* Support for the use_srtp extension */
 890
 891 #ifdef  __cplusplus
 892 extern "C" {
 893 #endif
 894
 895 /*
 896  * These need to be after the above set of includes due to a compiler bug
 897  * in VisualStudio 2015
 898  */
 899 DEFINE_STACK_OF_CONST(SSL_CIPHER)
 900 DEFINE_STACK_OF(SSL_COMP)
 901
 902 /* compatibility */
 903 # define SSL_set_app_data(s,arg)         (SSL_set_ex_data(s,0,(char *)(arg)))
 904 # define SSL_get_app_data(s)             (SSL_get_ex_data(s,0))
 905 # define SSL_SESSION_set_app_data(s,a)   (SSL_SESSION_set_ex_data(s,0, \
 906                                                                   (char *)(a)))
 907 # define SSL_SESSION_get_app_data(s)     (SSL_SESSION_get_ex_data(s,0))
 908 # define SSL_CTX_get_app_data(ctx)       (SSL_CTX_get_ex_data(ctx,0))
 909 # define SSL_CTX_set_app_data(ctx,arg)   (SSL_CTX_set_ex_data(ctx,0, \
 910                                                               (char *)(arg)))
 911 DEPRECATEDIN_1_1_0(void SSL_set_debug(SSL *s, int debug))
 912
 913 /* TLSv1.3 KeyUpdate message types */
 914 /* -1 used so that this is an invalid value for the on-the-wire protocol */
 915 #define SSL_KEY_UPDATE_NONE             -1
 916 /* Values as defined for the on-the-wire protocol */
 917 #define SSL_KEY_UPDATE_NOT_REQUESTED     0
 918 #define SSL_KEY_UPDATE_REQUESTED         1
 919
 920 /*
 921  * The valid handshake states (one for each type message sent and one for each
 922  * type of message received). There are also two "special" states:
 923  * TLS = TLS or DTLS state
 924  * DTLS = DTLS specific state
 925  * CR/SR = Client Read/Server Read
 926  * CW/SW = Client Write/Server Write
 927  *
 928  * The "special" states are:
 929  * TLS_ST_BEFORE = No handshake has been initiated yet
 930  * TLS_ST_OK = A handshake has been successfully completed
 931  */
 932 typedef enum {
 933     TLS_ST_BEFORE,
 934     TLS_ST_OK,
 935     DTLS_ST_CR_HELLO_VERIFY_REQUEST,
 936     TLS_ST_CR_SRVR_HELLO,
 937     TLS_ST_CR_CERT,
 938     TLS_ST_CR_CERT_STATUS,
 939     TLS_ST_CR_KEY_EXCH,
 940     TLS_ST_CR_CERT_REQ,
 941     TLS_ST_CR_SRVR_DONE,
 942     TLS_ST_CR_SESSION_TICKET,
 943     TLS_ST_CR_CHANGE,
 944     TLS_ST_CR_FINISHED,
 945     TLS_ST_CW_CLNT_HELLO,
 946     TLS_ST_CW_CERT,
 947     TLS_ST_CW_KEY_EXCH,
 948     TLS_ST_CW_CERT_VRFY,
 949     TLS_ST_CW_CHANGE,
 950     TLS_ST_CW_NEXT_PROTO,
 951     TLS_ST_CW_FINISHED,
 952     TLS_ST_SW_HELLO_REQ,
 953     TLS_ST_SR_CLNT_HELLO,
 954     DTLS_ST_SW_HELLO_VERIFY_REQUEST,
 955     TLS_ST_SW_SRVR_HELLO,
 956     TLS_ST_SW_CERT,
 957     TLS_ST_SW_KEY_EXCH,
 958     TLS_ST_SW_CERT_REQ,
 959     TLS_ST_SW_SRVR_DONE,
 960     TLS_ST_SR_CERT,
 961     TLS_ST_SR_KEY_EXCH,
 962     TLS_ST_SR_CERT_VRFY,
 963     TLS_ST_SR_NEXT_PROTO,
 964     TLS_ST_SR_CHANGE,
 965     TLS_ST_SR_FINISHED,
 966     TLS_ST_SW_SESSION_TICKET,
 967     TLS_ST_SW_CERT_STATUS,
 968     TLS_ST_SW_CHANGE,
 969     TLS_ST_SW_FINISHED,
 970     TLS_ST_SW_ENCRYPTED_EXTENSIONS,
 971     TLS_ST_CR_ENCRYPTED_EXTENSIONS,
 972     TLS_ST_CR_CERT_VRFY,
 973     TLS_ST_SW_CERT_VRFY,
 974     TLS_ST_CR_HELLO_REQ,
 975     TLS_ST_SW_HELLO_RETRY_REQUEST,
 976     TLS_ST_CR_HELLO_RETRY_REQUEST,
 977     TLS_ST_SW_KEY_UPDATE,
 978     TLS_ST_CW_KEY_UPDATE,
 979     TLS_ST_SR_KEY_UPDATE,
 980     TLS_ST_CR_KEY_UPDATE,
 981     TLS_ST_EARLY_DATA,
 982     TLS_ST_PENDING_EARLY_DATA_END,
 983     TLS_ST_CW_END_OF_EARLY_DATA,
 984     TLS_ST_SR_END_OF_EARLY_DATA
 985 } OSSL_HANDSHAKE_STATE;
 986
 987 /*
 988  * Most of the following state values are no longer used and are defined to be
 989  * the closest equivalent value in the current state machine code. Not all
 990  * defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
 991  * and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
 992  * SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
 993  */
 994
 995 # define SSL_ST_CONNECT                  0x1000
 996 # define SSL_ST_ACCEPT                   0x2000
 997
 998 # define SSL_ST_MASK                     0x0FFF
 999
1000 # define SSL_CB_LOOP                     0x01
1001 # define SSL_CB_EXIT                     0x02
1002 # define SSL_CB_READ                     0x04
1003 # define SSL_CB_WRITE                    0x08
1004 # define SSL_CB_ALERT                    0x4000/* used in callback */
1005 # define SSL_CB_READ_ALERT               (SSL_CB_ALERT|SSL_CB_READ)
1006 # define SSL_CB_WRITE_ALERT              (SSL_CB_ALERT|SSL_CB_WRITE)
1007 # define SSL_CB_ACCEPT_LOOP              (SSL_ST_ACCEPT|SSL_CB_LOOP)
1008 # define SSL_CB_ACCEPT_EXIT              (SSL_ST_ACCEPT|SSL_CB_EXIT)
1009 # define SSL_CB_CONNECT_LOOP             (SSL_ST_CONNECT|SSL_CB_LOOP)
1010 # define SSL_CB_CONNECT_EXIT             (SSL_ST_CONNECT|SSL_CB_EXIT)
1011 # define SSL_CB_HANDSHAKE_START          0x10
1012 # define SSL_CB_HANDSHAKE_DONE           0x20
1013
1014 /* Is the SSL_connection established? */
1015 # define SSL_in_connect_init(a)          (SSL_in_init(a) && !SSL_is_server(a))
1016 # define SSL_in_accept_init(a)           (SSL_in_init(a) && SSL_is_server(a))
1017 int SSL_in_init(SSL *s);
1018 int SSL_in_before(SSL *s);
1019 int SSL_is_init_finished(SSL *s);
1020
1021 /*
1022  * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
1023  * should not need these
1024  */
1025 # define SSL_ST_READ_HEADER                      0xF0
1026 # define SSL_ST_READ_BODY                        0xF1
1027 # define SSL_ST_READ_DONE                        0xF2
1028
1029 /*-
1030  * Obtain latest Finished message
1031  *   -- that we sent (SSL_get_finished)
1032  *   -- that we expected from peer (SSL_get_peer_finished).
1033  * Returns length (0 == no Finished so far), copies up to 'count' bytes.
1034  */
1035 size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
1036 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
1037
1038 /*
1039  * use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 2 options are
1040  * 'ored' with SSL_VERIFY_PEER if they are desired
1041  */
1042 # define SSL_VERIFY_NONE                 0x00
1043 # define SSL_VERIFY_PEER                 0x01
1044 # define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
1045 # define SSL_VERIFY_CLIENT_ONCE          0x04
1046
1047 # define OpenSSL_add_ssl_algorithms()    SSL_library_init()
1048 # if OPENSSL_API_COMPAT < 0x10100000L
1049 #  define SSLeay_add_ssl_algorithms()    SSL_library_init()
1050 # endif
1051
1052 /* More backward compatibility */
1053 # define SSL_get_cipher(s) \
1054                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1055 # define SSL_get_cipher_bits(s,np) \
1056                 SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
1057 # define SSL_get_cipher_version(s) \
1058                 SSL_CIPHER_get_version(SSL_get_current_cipher(s))
1059 # define SSL_get_cipher_name(s) \
1060                 SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1061 # define SSL_get_time(a)         SSL_SESSION_get_time(a)
1062 # define SSL_set_time(a,b)       SSL_SESSION_set_time((a),(b))
1063 # define SSL_get_timeout(a)      SSL_SESSION_get_timeout(a)
1064 # define SSL_set_timeout(a,b)    SSL_SESSION_set_timeout((a),(b))
1065
1066 # define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
1067 # define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
1068
1069 DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
1070 # define SSL_AD_REASON_OFFSET            1000/* offset to get SSL_R_... value
1071                                               * from SSL_AD_... */
1072 /* These alert types are for SSLv3 and TLSv1 */
1073 # define SSL_AD_CLOSE_NOTIFY             SSL3_AD_CLOSE_NOTIFY
1074 /* fatal */
1075 # define SSL_AD_UNEXPECTED_MESSAGE       SSL3_AD_UNEXPECTED_MESSAGE
1076 /* fatal */
1077 # define SSL_AD_BAD_RECORD_MAC           SSL3_AD_BAD_RECORD_MAC
1078 # define SSL_AD_DECRYPTION_FAILED        TLS1_AD_DECRYPTION_FAILED
1079 # define SSL_AD_RECORD_OVERFLOW          TLS1_AD_RECORD_OVERFLOW
1080 /* fatal */
1081 # define SSL_AD_DECOMPRESSION_FAILURE    SSL3_AD_DECOMPRESSION_FAILURE
1082 /* fatal */
1083 # define SSL_AD_HANDSHAKE_FAILURE        SSL3_AD_HANDSHAKE_FAILURE
1084 /* Not for TLS */
1085 # define SSL_AD_NO_CERTIFICATE           SSL3_AD_NO_CERTIFICATE
1086 # define SSL_AD_BAD_CERTIFICATE          SSL3_AD_BAD_CERTIFICATE
1087 # define SSL_AD_UNSUPPORTED_CERTIFICATE  SSL3_AD_UNSUPPORTED_CERTIFICATE
1088 # define SSL_AD_CERTIFICATE_REVOKED      SSL3_AD_CERTIFICATE_REVOKED
1089 # define SSL_AD_CERTIFICATE_EXPIRED      SSL3_AD_CERTIFICATE_EXPIRED
1090 # define SSL_AD_CERTIFICATE_UNKNOWN      SSL3_AD_CERTIFICATE_UNKNOWN
1091 /* fatal */
1092 # define SSL_AD_ILLEGAL_PARAMETER        SSL3_AD_ILLEGAL_PARAMETER
1093 /* fatal */
1094 # define SSL_AD_UNKNOWN_CA               TLS1_AD_UNKNOWN_CA
1095 /* fatal */
1096 # define SSL_AD_ACCESS_DENIED            TLS1_AD_ACCESS_DENIED
1097 /* fatal */
1098 # define SSL_AD_DECODE_ERROR             TLS1_AD_DECODE_ERROR
1099 # define SSL_AD_DECRYPT_ERROR            TLS1_AD_DECRYPT_ERROR
1100 /* fatal */
1101 # define SSL_AD_EXPORT_RESTRICTION       TLS1_AD_EXPORT_RESTRICTION
1102 /* fatal */
1103 # define SSL_AD_PROTOCOL_VERSION         TLS1_AD_PROTOCOL_VERSION
1104 /* fatal */
1105 # define SSL_AD_INSUFFICIENT_SECURITY    TLS1_AD_INSUFFICIENT_SECURITY
1106 /* fatal */
1107 # define SSL_AD_INTERNAL_ERROR           TLS1_AD_INTERNAL_ERROR
1108 # define SSL_AD_USER_CANCELLED           TLS1_AD_USER_CANCELLED
1109 # define SSL_AD_NO_RENEGOTIATION         TLS1_AD_NO_RENEGOTIATION
1110 # define SSL_AD_MISSING_EXTENSION        TLS13_AD_MISSING_EXTENSION
1111 # define SSL_AD_CERTIFICATE_REQUIRED     TLS13_AD_CERTIFICATE_REQUIRED
1112 # define SSL_AD_UNSUPPORTED_EXTENSION    TLS1_AD_UNSUPPORTED_EXTENSION
1113 # define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
1114 # define SSL_AD_UNRECOGNIZED_NAME        TLS1_AD_UNRECOGNIZED_NAME
1115 # define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
1116 # define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
1117 /* fatal */
1118 # define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY
1119 /* fatal */
1120 # define SSL_AD_INAPPROPRIATE_FALLBACK   TLS1_AD_INAPPROPRIATE_FALLBACK
1121 # define SSL_AD_NO_APPLICATION_PROTOCOL  TLS1_AD_NO_APPLICATION_PROTOCOL
1122 # define SSL_ERROR_NONE                  0
1123 # define SSL_ERROR_SSL                   1
1124 # define SSL_ERROR_WANT_READ             2
1125 # define SSL_ERROR_WANT_WRITE            3
1126 # define SSL_ERROR_WANT_X509_LOOKUP      4
1127 # define SSL_ERROR_SYSCALL               5/* look at error stack/return
1128                                            * value/errno */
1129 # define SSL_ERROR_ZERO_RETURN           6
1130 # define SSL_ERROR_WANT_CONNECT          7
1131 # define SSL_ERROR_WANT_ACCEPT           8
1132 # define SSL_ERROR_WANT_ASYNC            9
1133 # define SSL_ERROR_WANT_ASYNC_JOB       10
1134 # define SSL_ERROR_WANT_EARLY           11
1135 # define SSL_CTRL_SET_TMP_DH                     3
1136 # define SSL_CTRL_SET_TMP_ECDH                   4
1137 # define SSL_CTRL_SET_TMP_DH_CB                  6
1138 # define SSL_CTRL_GET_CLIENT_CERT_REQUEST        9
1139 # define SSL_CTRL_GET_NUM_RENEGOTIATIONS         10
1140 # define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS       11
1141 # define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS       12
1142 # define SSL_CTRL_GET_FLAGS                      13
1143 # define SSL_CTRL_EXTRA_CHAIN_CERT               14
1144 # define SSL_CTRL_SET_MSG_CALLBACK               15
1145 # define SSL_CTRL_SET_MSG_CALLBACK_ARG           16
1146 /* only applies to datagram connections */
1147 # define SSL_CTRL_SET_MTU                17
1148 /* Stats */
1149 # define SSL_CTRL_SESS_NUMBER                    20
1150 # define SSL_CTRL_SESS_CONNECT                   21
1151 # define SSL_CTRL_SESS_CONNECT_GOOD              22
1152 # define SSL_CTRL_SESS_CONNECT_RENEGOTIATE       23
1153 # define SSL_CTRL_SESS_ACCEPT                    24
1154 # define SSL_CTRL_SESS_ACCEPT_GOOD               25
1155 # define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE        26
1156 # define SSL_CTRL_SESS_HIT                       27
1157 # define SSL_CTRL_SESS_CB_HIT                    28
1158 # define SSL_CTRL_SESS_MISSES                    29
1159 # define SSL_CTRL_SESS_TIMEOUTS                  30
1160 # define SSL_CTRL_SESS_CACHE_FULL                31
1161 # define SSL_CTRL_MODE                           33
1162 # define SSL_CTRL_GET_READ_AHEAD                 40
1163 # define SSL_CTRL_SET_READ_AHEAD                 41
1164 # define SSL_CTRL_SET_SESS_CACHE_SIZE            42
1165 # define SSL_CTRL_GET_SESS_CACHE_SIZE            43
1166 # define SSL_CTRL_SET_SESS_CACHE_MODE            44
1167 # define SSL_CTRL_GET_SESS_CACHE_MODE            45
1168 # define SSL_CTRL_GET_MAX_CERT_LIST              50
1169 # define SSL_CTRL_SET_MAX_CERT_LIST              51
1170 # define SSL_CTRL_SET_MAX_SEND_FRAGMENT          52
1171 /* see tls1.h for macros based on these */
1172 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB       53
1173 # define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG      54
1174 # define SSL_CTRL_SET_TLSEXT_HOSTNAME            55
1175 # define SSL_CTRL_SET_TLSEXT_DEBUG_CB            56
1176 # define SSL_CTRL_SET_TLSEXT_DEBUG_ARG           57
1177 # define SSL_CTRL_GET_TLSEXT_TICKET_KEYS         58
1178 # define SSL_CTRL_SET_TLSEXT_TICKET_KEYS         59
1179 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60 */
1180 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 */
1181 /*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 */
1182 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB       63
1183 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG   64
1184 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE     65
1185 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS     66
1186 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS     67
1187 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS      68
1188 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS      69
1189 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP        70
1190 # define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP        71
1191 # define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB       72
1192 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB    75
1193 # define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB                76
1194 # define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB             77
1195 # define SSL_CTRL_SET_SRP_ARG            78
1196 # define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME               79
1197 # define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH               80
1198 # define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD               81
1199 # ifndef OPENSSL_NO_HEARTBEATS
1200 #  define SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT               85
1201 #  define SSL_CTRL_GET_DTLS_EXT_HEARTBEAT_PENDING        86
1202 #  define SSL_CTRL_SET_DTLS_EXT_HEARTBEAT_NO_REQUESTS    87
1203 # endif
1204 # define DTLS_CTRL_GET_TIMEOUT           73
1205 # define DTLS_CTRL_HANDLE_TIMEOUT        74
1206 # define SSL_CTRL_GET_RI_SUPPORT                 76
1207 # define SSL_CTRL_CLEAR_MODE                     78
1208 # define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB      79
1209 # define SSL_CTRL_GET_EXTRA_CHAIN_CERTS          82
1210 # define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS        83
1211 # define SSL_CTRL_CHAIN                          88
1212 # define SSL_CTRL_CHAIN_CERT                     89
1213 # define SSL_CTRL_GET_GROUPS                     90
1214 # define SSL_CTRL_SET_GROUPS                     91
1215 # define SSL_CTRL_SET_GROUPS_LIST                92
1216 # define SSL_CTRL_GET_SHARED_GROUP               93
1217 # define SSL_CTRL_SET_SIGALGS                    97
1218 # define SSL_CTRL_SET_SIGALGS_LIST               98
1219 # define SSL_CTRL_CERT_FLAGS                     99
1220 # define SSL_CTRL_CLEAR_CERT_FLAGS               100
1221 # define SSL_CTRL_SET_CLIENT_SIGALGS             101
1222 # define SSL_CTRL_SET_CLIENT_SIGALGS_LIST        102
1223 # define SSL_CTRL_GET_CLIENT_CERT_TYPES          103
1224 # define SSL_CTRL_SET_CLIENT_CERT_TYPES          104
1225 # define SSL_CTRL_BUILD_CERT_CHAIN               105
1226 # define SSL_CTRL_SET_VERIFY_CERT_STORE          106
1227 # define SSL_CTRL_SET_CHAIN_CERT_STORE           107
1228 # define SSL_CTRL_GET_PEER_SIGNATURE_NID         108
1229 # define SSL_CTRL_GET_SERVER_TMP_KEY             109
1230 # define SSL_CTRL_GET_RAW_CIPHERLIST             110
1231 # define SSL_CTRL_GET_EC_POINT_FORMATS           111
1232 # define SSL_CTRL_GET_CHAIN_CERTS                115
1233 # define SSL_CTRL_SELECT_CURRENT_CERT            116
1234 # define SSL_CTRL_SET_CURRENT_CERT               117
1235 # define SSL_CTRL_SET_DH_AUTO                    118
1236 # define DTLS_CTRL_SET_LINK_MTU                  120
1237 # define DTLS_CTRL_GET_LINK_MIN_MTU              121
1238 # define SSL_CTRL_GET_EXTMS_SUPPORT              122
1239 # define SSL_CTRL_SET_MIN_PROTO_VERSION          123
1240 # define SSL_CTRL_SET_MAX_PROTO_VERSION          124
1241 # define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT        125
1242 # define SSL_CTRL_SET_MAX_PIPELINES              126
1243 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE     127
1244 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB       128
1245 # define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG   129
1246 # define SSL_CERT_SET_FIRST                      1
1247 # define SSL_CERT_SET_NEXT                       2
1248 # define SSL_CERT_SET_SERVER                     3
1249 # define DTLSv1_get_timeout(ssl, arg) \
1250         SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
1251 # define DTLSv1_handle_timeout(ssl) \
1252         SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
1253 # define SSL_num_renegotiations(ssl) \
1254         SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
1255 # define SSL_clear_num_renegotiations(ssl) \
1256         SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
1257 # define SSL_total_renegotiations(ssl) \
1258         SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
1259 # define SSL_CTX_set_tmp_dh(ctx,dh) \
1260         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1261 # define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
1262         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1263 # define SSL_CTX_set_dh_auto(ctx, onoff) \
1264         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1265 # define SSL_set_dh_auto(s, onoff) \
1266         SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1267 # define SSL_set_tmp_dh(ssl,dh) \
1268         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1269 # define SSL_set_tmp_ecdh(ssl,ecdh) \
1270         SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1271 # define SSL_CTX_add_extra_chain_cert(ctx,x509) \
1272         SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
1273 # define SSL_CTX_get_extra_chain_certs(ctx,px509) \
1274         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
1275 # define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
1276         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
1277 # define SSL_CTX_clear_extra_chain_certs(ctx) \
1278         SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
1279 # define SSL_CTX_set0_chain(ctx,sk) \
1280         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1281 # define SSL_CTX_set1_chain(ctx,sk) \
1282         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1283 # define SSL_CTX_add0_chain_cert(ctx,x509) \
1284         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1285 # define SSL_CTX_add1_chain_cert(ctx,x509) \
1286         SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1287 # define SSL_CTX_get0_chain_certs(ctx,px509) \
1288         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1289 # define SSL_CTX_clear_chain_certs(ctx) \
1290         SSL_CTX_set0_chain(ctx,NULL)
1291 # define SSL_CTX_build_cert_chain(ctx, flags) \
1292         SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1293 # define SSL_CTX_select_current_cert(ctx,x509) \
1294         SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1295 # define SSL_CTX_set_current_cert(ctx, op) \
1296         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1297 # define SSL_CTX_set0_verify_cert_store(ctx,st) \
1298         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1299 # define SSL_CTX_set1_verify_cert_store(ctx,st) \
1300         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1301 # define SSL_CTX_set0_chain_cert_store(ctx,st) \
1302         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1303 # define SSL_CTX_set1_chain_cert_store(ctx,st) \
1304         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1305 # define SSL_set0_chain(ctx,sk) \
1306         SSL_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1307 # define SSL_set1_chain(ctx,sk) \
1308         SSL_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1309 # define SSL_add0_chain_cert(ctx,x509) \
1310         SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1311 # define SSL_add1_chain_cert(ctx,x509) \
1312         SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1313 # define SSL_get0_chain_certs(ctx,px509) \
1314         SSL_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1315 # define SSL_clear_chain_certs(ctx) \
1316         SSL_set0_chain(ctx,NULL)
1317 # define SSL_build_cert_chain(s, flags) \
1318         SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1319 # define SSL_select_current_cert(ctx,x509) \
1320         SSL_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1321 # define SSL_set_current_cert(ctx,op) \
1322         SSL_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1323 # define SSL_set0_verify_cert_store(s,st) \
1324         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1325 # define SSL_set1_verify_cert_store(s,st) \
1326         SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1327 # define SSL_set0_chain_cert_store(s,st) \
1328         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1329 # define SSL_set1_chain_cert_store(s,st) \
1330         SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1331 # define SSL_get1_groups(ctx, s) \
1332         SSL_ctrl(ctx,SSL_CTRL_GET_GROUPS,0,(char *)(s))
1333 # define SSL_get1_curves(ctx, s) \
1334         SSL_get1_groups((ctx), (s))
1335 # define SSL_CTX_set1_groups(ctx, glist, glistlen) \
1336         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1337 # define SSL_CTX_set1_groups_list(ctx, s) \
1338         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1339 # define SSL_CTX_set1_curves(ctx, clist, clistlen) \
1340         SSL_CTX_set1_groups((ctx), (clist), (clistlen))
1341 # define SSL_CTX_set1_curves_list(ctx, s) \
1342         SSL_CTX_set1_groups_list((ctx), (s))
1343 # define SSL_set1_groups(ctx, glist, glistlen) \
1344         SSL_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1345 # define SSL_set1_groups_list(ctx, s) \
1346         SSL_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1347 # define SSL_set1_curves(ctx, clist, clistlen) \
1348         SSL_set1_groups((ctx), (clist), (clistlen))
1349 # define SSL_set1_curves_list(ctx, s) \
1350         SSL_set1_groups_list((ctx), (s))
1351 # define SSL_get_shared_group(s, n) \
1352         SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
1353 # define SSL_get_shared_curve(s, n) \
1354         SSL_get_shared_group((s), (n))
1355 # define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
1356         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1357 # define SSL_CTX_set1_sigalgs_list(ctx, s) \
1358         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1359 # define SSL_set1_sigalgs(ctx, slist, slistlen) \
1360         SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1361 # define SSL_set1_sigalgs_list(ctx, s) \
1362         SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1363 # define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
1364         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1365 # define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
1366         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1367 # define SSL_set1_client_sigalgs(ctx, slist, slistlen) \
1368         SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,clistlen,(int *)(slist))
1369 # define SSL_set1_client_sigalgs_list(ctx, s) \
1370         SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1371 # define SSL_get0_certificate_types(s, clist) \
1372         SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
1373 # define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
1374         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
1375                      (char *)(clist))
1376 # define SSL_set1_client_certificate_types(s, clist, clistlen) \
1377         SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
1378 # define SSL_get_peer_signature_nid(s, pn) \
1379         SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
1380 # define SSL_get_server_tmp_key(s, pk) \
1381         SSL_ctrl(s,SSL_CTRL_GET_SERVER_TMP_KEY,0,pk)
1382 # define SSL_get0_raw_cipherlist(s, plst) \
1383         SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
1384 # define SSL_get0_ec_point_formats(s, plst) \
1385         SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
1386 #define SSL_CTX_set_min_proto_version(ctx, version) \
1387         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1388 #define SSL_CTX_set_max_proto_version(ctx, version) \
1389         SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1390 #define SSL_set_min_proto_version(s, version) \
1391         SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1392 #define SSL_set_max_proto_version(s, version) \
1393         SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1394
1395 #if OPENSSL_API_COMPAT < 0x10100000L
1396 /* Provide some compatibility macros for removed functionality. */
1397 # define SSL_CTX_need_tmp_RSA(ctx)                0
1398 # define SSL_CTX_set_tmp_rsa(ctx,rsa)             1
1399 # define SSL_need_tmp_RSA(ssl)                    0
1400 # define SSL_set_tmp_rsa(ssl,rsa)                 1
1401 # define SSL_CTX_set_ecdh_auto(dummy, onoff)      ((onoff) != 0)
1402 # define SSL_set_ecdh_auto(dummy, onoff)          ((onoff) != 0)
1403 /*
1404  * We "pretend" to call the callback to avoid warnings about unused static
1405  * functions.
1406  */
1407 # define SSL_CTX_set_tmp_rsa_callback(ctx, cb)    while(0) (cb)(NULL, 0, 0)
1408 # define SSL_set_tmp_rsa_callback(ssl, cb)        while(0) (cb)(NULL, 0, 0)
1409 #endif
1410
1411 __owur const BIO_METHOD *BIO_f_ssl(void);
1412 __owur BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
1413 __owur BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
1414 __owur BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
1415 __owur int BIO_ssl_copy_session_id(BIO *to, BIO *from);
1416 void BIO_ssl_shutdown(BIO *ssl_bio);
1417
1418 __owur int SSL_CTX_set_cipher_list(SSL_CTX *, const char *str);
1419 __owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
1420 int SSL_CTX_up_ref(SSL_CTX *ctx);
1421 void SSL_CTX_free(SSL_CTX *);
1422 __owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
1423 __owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
1424 __owur X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
1425 void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
1426 void SSL_CTX_set1_cert_store(SSL_CTX *, X509_STORE *);
1427 __owur int SSL_want(const SSL *s);
1428 __owur int SSL_clear(SSL *s);
1429
1430 void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
1431
1432 __owur const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
1433 __owur const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s);
1434 __owur int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits);
1435 __owur const char *SSL_CIPHER_get_version(const SSL_CIPHER *c);
1436 __owur const char *SSL_CIPHER_get_name(const SSL_CIPHER *c);
1437 __owur const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
1438 __owur const char *OPENSSL_cipher_name(const char *rfc_name);
1439 __owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
1440 __owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
1441 __owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
1442 __owur const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c);
1443 __owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
1444
1445 __owur int SSL_get_fd(const SSL *s);
1446 __owur int SSL_get_rfd(const SSL *s);
1447 __owur int SSL_get_wfd(const SSL *s);
1448 __owur const char *SSL_get_cipher_list(const SSL *s, int n);
1449 __owur char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len);
1450 __owur int SSL_get_read_ahead(const SSL *s);
1451 __owur int SSL_pending(const SSL *s);
1452 __owur int SSL_has_pending(const SSL *s);
1453 # ifndef OPENSSL_NO_SOCK
1454 __owur int SSL_set_fd(SSL *s, int fd);
1455 __owur int SSL_set_rfd(SSL *s, int fd);
1456 __owur int SSL_set_wfd(SSL *s, int fd);
1457 # endif
1458 void SSL_set0_rbio(SSL *s, BIO *rbio);
1459 void SSL_set0_wbio(SSL *s, BIO *wbio);
1460 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio);
1461 __owur BIO *SSL_get_rbio(const SSL *s);
1462 __owur BIO *SSL_get_wbio(const SSL *s);
1463 __owur int SSL_set_cipher_list(SSL *s, const char *str);
1464 void SSL_set_read_ahead(SSL *s, int yes);
1465 __owur int SSL_get_verify_mode(const SSL *s);
1466 __owur int SSL_get_verify_depth(const SSL *s);
1467 __owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
1468 void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
1469 void SSL_set_verify_depth(SSL *s, int depth);
1470 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg);
1471 # ifndef OPENSSL_NO_RSA
1472 __owur int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
1473 __owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len);
1474 # endif
1475 __owur int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
1476 __owur int SSL_use_PrivateKey_ASN1(int pk, SSL *ssl, const unsigned char *d,
1477                             long len);
1478 __owur int SSL_use_certificate(SSL *ssl, X509 *x);
1479 __owur int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);
1480
1481
1482 /* serverinfo file format versions */
1483 # define SSL_SERVERINFOV1   1
1484 # define SSL_SERVERINFOV2   2
1485
1486 /* Set serverinfo data for the current active cert. */
1487 __owur int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
1488                            size_t serverinfo_length);
1489 __owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
1490                                      const unsigned char *serverinfo,
1491                                      size_t serverinfo_length);
1492 __owur int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
1493
1494 #ifndef OPENSSL_NO_RSA
1495 __owur int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
1496 #endif
1497
1498 __owur int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
1499 __owur int SSL_use_certificate_file(SSL *ssl, const char *file, int type);
1500
1501 #ifndef OPENSSL_NO_RSA
1502 __owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type);
1503 #endif
1504 __owur int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type);
1505 __owur int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type);
1506 /* PEM type */
1507 __owur int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);
1508 __owur int SSL_use_certificate_chain_file(SSL *ssl, const char *file);
1509 __owur STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
1510 __owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1511                                         const char *file);
1512 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1513                                        const char *dir);
1514
1515 #if OPENSSL_API_COMPAT < 0x10100000L
1516 # define SSL_load_error_strings() \
1517     OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
1518                      | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
1519 #endif
1520
1521 __owur const char *SSL_state_string(const SSL *s);
1522 __owur const char *SSL_rstate_string(const SSL *s);
1523 __owur const char *SSL_state_string_long(const SSL *s);
1524 __owur const char *SSL_rstate_string_long(const SSL *s);
1525 __owur long SSL_SESSION_get_time(const SSL_SESSION *s);
1526 __owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
1527 __owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
1528 __owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
1529 __owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
1530 __owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
1531
1532 __owur const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s);
1533 __owur const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s);
1534 __owur int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher);
1535 __owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
1536 __owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
1537 void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
1538                             size_t *len);
1539 __owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
1540 __owur int SSL_copy_session_id(SSL *to, const SSL *from);
1541 __owur X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
1542 __owur int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx,
1543                                 unsigned int sid_ctx_len);
1544 __owur int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
1545                                unsigned int sid_len);
1546 __owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
1547
1548 __owur SSL_SESSION *SSL_SESSION_new(void);
1549 __owur SSL_SESSION *SSL_SESSION_dup(SSL_SESSION *src);
1550 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
1551                                         unsigned int *len);
1552 const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
1553                                                 unsigned int *len);
1554 __owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
1555 # ifndef OPENSSL_NO_STDIO
1556 int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *ses);
1557 # endif
1558 int SSL_SESSION_print(BIO *fp, const SSL_SESSION *ses);
1559 int SSL_SESSION_print_keylog(BIO *bp, const SSL_SESSION *x);
1560 int SSL_SESSION_up_ref(SSL_SESSION *ses);
1561 void SSL_SESSION_free(SSL_SESSION *ses);
1562 __owur int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp);
1563 __owur int SSL_set_session(SSL *to, SSL_SESSION *session);
1564 int SSL_CTX_add_session(SSL_CTX *s, SSL_SESSION *c);
1565 int SSL_CTX_remove_session(SSL_CTX *, SSL_SESSION *c);
1566 __owur int SSL_CTX_set_generate_session_id(SSL_CTX *, GEN_SESSION_CB);
1567 __owur int SSL_set_generate_session_id(SSL *, GEN_SESSION_CB);
1568 __owur int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
1569                                 unsigned int id_len);
1570 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
1571                              long length);
1572
1573 # ifdef HEADER_X509_H
1574 __owur X509 *SSL_get_peer_certificate(const SSL *s);
1575 # endif
1576
1577 __owur STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);
1578
1579 __owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
1580 __owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
1581 __owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
1582 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
1583 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
1584 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1585                                       int (*cb) (X509_STORE_CTX *, void *),
1586                                       void *arg);
1587 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
1588                          void *arg);
1589 # ifndef OPENSSL_NO_RSA
1590 __owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
1591 __owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
1592                                    long len);
1593 # endif
1594 __owur int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
1595 __owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
1596                                 const unsigned char *d, long len);
1597 __owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
1598 __owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
1599                                  const unsigned char *d);
1600
1601 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
1602 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
1603 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx);
1604 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx);
1605 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb);
1606 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u);
1607 pem_password_cb *SSL_get_default_passwd_cb(SSL *s);
1608 void *SSL_get_default_passwd_cb_userdata(SSL *s);
1609
1610 __owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
1611 __owur int SSL_check_private_key(const SSL *ctx);
1612
1613 __owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
1614                                    unsigned int sid_ctx_len);
1615
1616 SSL *SSL_new(SSL_CTX *ctx);
1617 int SSL_up_ref(SSL *s);
1618 int SSL_is_dtls(const SSL *s);
1619 __owur int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
1620                                unsigned int sid_ctx_len);
1621
1622 __owur int SSL_CTX_set_purpose(SSL_CTX *s, int purpose);
1623 __owur int SSL_set_purpose(SSL *s, int purpose);
1624 __owur int SSL_CTX_set_trust(SSL_CTX *s, int trust);
1625 __owur int SSL_set_trust(SSL *s, int trust);
1626
1627 __owur int SSL_set1_host(SSL *s, const char *hostname);
1628 __owur int SSL_add1_host(SSL *s, const char *hostname);
1629 __owur const char *SSL_get0_peername(SSL *s);
1630 void SSL_set_hostflags(SSL *s, unsigned int flags);
1631
1632 __owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
1633 __owur int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md,
1634                                   uint8_t mtype, uint8_t ord);
1635 __owur int SSL_dane_enable(SSL *s, const char *basedomain);
1636 __owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1637                              uint8_t mtype, unsigned char *data, size_t dlen);
1638 __owur int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki);
1639 __owur int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1640                               uint8_t *mtype, unsigned const char **data,
1641                               size_t *dlen);
1642 /*
1643  * Bridge opacity barrier between libcrypt and libssl, also needed to support
1644  * offline testing in test/danetest.c
1645  */
1646 SSL_DANE *SSL_get0_dane(SSL *ssl);
1647 /*
1648  * DANE flags
1649  */
1650 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
1651 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
1652 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
1653 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
1654
1655 __owur int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
1656 __owur int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);
1657
1658 __owur X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
1659 __owur X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
1660
1661 # ifndef OPENSSL_NO_SRP
1662 int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name);
1663 int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password);
1664 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
1665 int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
1666                                         char *(*cb) (SSL *, void *));
1667 int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
1668                                           int (*cb) (SSL *, void *));
1669 int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
1670                                       int (*cb) (SSL *, int *, void *));
1671 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
1672
1673 int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
1674                              BIGNUM *sa, BIGNUM *v, char *info);
1675 int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
1676                                 const char *grp);
1677
1678 __owur BIGNUM *SSL_get_srp_g(SSL *s);
1679 __owur BIGNUM *SSL_get_srp_N(SSL *s);
1680
1681 __owur char *SSL_get_srp_username(SSL *s);
1682 __owur char *SSL_get_srp_userinfo(SSL *s);
1683 # endif
1684
1685 /*
1686  * Early callback and helpers.
1687  */
1688 typedef int (*SSL_early_cb_fn) (SSL *s, int *al, void *arg);
1689 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg);
1690 int SSL_early_isv2(SSL *s);
1691 unsigned int SSL_early_get0_legacy_version(SSL *s);
1692 size_t SSL_early_get0_random(SSL *s, const unsigned char **out);
1693 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out);
1694 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out);
1695 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out);
1696 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen);
1697 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
1698                        size_t *outlen);
1699
1700 void SSL_certs_clear(SSL *s);
1701 void SSL_free(SSL *ssl);
1702 # ifdef OSSL_ASYNC_FD
1703 /*
1704  * Windows application developer has to include windows.h to use these.
1705  */
1706 __owur int SSL_waiting_for_async(SSL *s);
1707 __owur int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds);
1708 __owur int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd,
1709                                      size_t *numaddfds, OSSL_ASYNC_FD *delfd,
1710                                      size_t *numdelfds);
1711 # endif
1712 __owur int SSL_accept(SSL *ssl);
1713 __owur int SSL_connect(SSL *ssl);
1714 __owur int SSL_read(SSL *ssl, void *buf, int num);
1715 __owur int SSL_read_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1716
1717 # define SSL_READ_EARLY_DATA_ERROR   0
1718 # define SSL_READ_EARLY_DATA_SUCCESS 1
1719 # define SSL_READ_EARLY_DATA_FINISH  2
1720
1721 __owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
1722                                size_t *readbytes);
1723 __owur int SSL_peek(SSL *ssl, void *buf, int num);
1724 __owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
1725 __owur int SSL_write(SSL *ssl, const void *buf, int num);
1726 __owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
1727 __owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
1728                                 size_t *written);
1729 long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg);
1730 long SSL_callback_ctrl(SSL *, int, void (*)(void));
1731 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg);
1732 long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));
1733
1734 # define SSL_EARLY_DATA_NOT_SENT    0
1735 # define SSL_EARLY_DATA_REJECTED    1
1736 # define SSL_EARLY_DATA_ACCEPTED    2
1737
1738 __owur int SSL_get_early_data_status(const SSL *s);
1739
1740 __owur int SSL_get_error(const SSL *s, int ret_code);
1741 __owur const char *SSL_get_version(const SSL *s);
1742
1743 /* This sets the 'default' SSL version that SSL_new() will create */
1744 __owur int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);
1745
1746 # ifndef OPENSSL_NO_SSL3_METHOD
1747 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_method(void)) /* SSLv3 */
1748 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_server_method(void)) /* SSLv3 */
1749 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *SSLv3_client_method(void)) /* SSLv3 */
1750 # endif
1751
1752 #define SSLv23_method           TLS_method
1753 #define SSLv23_server_method    TLS_server_method
1754 #define SSLv23_client_method    TLS_client_method
1755
1756 /* Negotiate highest available SSL/TLS version */
1757 __owur const SSL_METHOD *TLS_method(void);
1758 __owur const SSL_METHOD *TLS_server_method(void);
1759 __owur const SSL_METHOD *TLS_client_method(void);
1760
1761 # ifndef OPENSSL_NO_TLS1_METHOD
1762 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_method(void)) /* TLSv1.0 */
1763 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_server_method(void)) /* TLSv1.0 */
1764 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_client_method(void)) /* TLSv1.0 */
1765 # endif
1766
1767 # ifndef OPENSSL_NO_TLS1_1_METHOD
1768 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_method(void)) /* TLSv1.1 */
1769 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_server_method(void)) /* TLSv1.1 */
1770 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_client_method(void)) /* TLSv1.1 */
1771 # endif
1772
1773 # ifndef OPENSSL_NO_TLS1_2_METHOD
1774 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_method(void)) /* TLSv1.2 */
1775 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_server_method(void)) /* TLSv1.2 */
1776 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_client_method(void)) /* TLSv1.2 */
1777 # endif
1778
1779 # ifndef OPENSSL_NO_DTLS1_METHOD
1780 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_method(void)) /* DTLSv1.0 */
1781 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_server_method(void)) /* DTLSv1.0 */
1782 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_client_method(void)) /* DTLSv1.0 */
1783 # endif
1784
1785 # ifndef OPENSSL_NO_DTLS1_2_METHOD
1786 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_method(void)) /* DTLSv1.2 */
1787 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_server_method(void)) /* DTLSv1.2 */
1788 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *DTLSv1_2_client_method(void)) /* DTLSv1.2 */
1789 #endif
1790
1791 __owur const SSL_METHOD *DTLS_method(void); /* DTLS 1.0 and 1.2 */
1792 __owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
1793 __owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
1794
1795 __owur size_t DTLS_get_data_mtu(const SSL *s);
1796
1797 __owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
1798 __owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
1799 __owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
1800 __owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
1801
1802 __owur int SSL_do_handshake(SSL *s);
1803 int SSL_key_update(SSL *s, int updatetype);
1804 int SSL_get_key_update_type(SSL *s);
1805 int SSL_renegotiate(SSL *s);
1806 int SSL_renegotiate_abbreviated(SSL *s);
1807 __owur int SSL_renegotiate_pending(SSL *s);
1808 int SSL_shutdown(SSL *s);
1809
1810 __owur const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx);
1811 __owur const SSL_METHOD *SSL_get_ssl_method(SSL *s);
1812 __owur int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
1813 __owur const char *SSL_alert_type_string_long(int value);
1814 __owur const char *SSL_alert_type_string(int value);
1815 __owur const char *SSL_alert_desc_string_long(int value);
1816 __owur const char *SSL_alert_desc_string(int value);
1817
1818 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
1819 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
1820 __owur const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
1821 __owur const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
1822 __owur int SSL_add1_CA_list(SSL *ssl, const X509 *x);
1823 __owur int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x);
1824 __owur const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
1825
1826 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
1827 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
1828 __owur STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
1829 __owur STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
1830 __owur int SSL_add_client_CA(SSL *ssl, X509 *x);
1831 __owur int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);
1832
1833 void SSL_set_connect_state(SSL *s);
1834 void SSL_set_accept_state(SSL *s);
1835
1836 __owur long SSL_get_default_timeout(const SSL *s);
1837
1838 #if OPENSSL_API_COMPAT < 0x10100000L
1839 # define SSL_library_init() OPENSSL_init_ssl(0, NULL)
1840 #endif
1841
1842 __owur char *SSL_CIPHER_description(const SSL_CIPHER *, char *buf, int size);
1843 __owur STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk);
1844
1845 __owur SSL *SSL_dup(SSL *ssl);
1846
1847 __owur X509 *SSL_get_certificate(const SSL *ssl);
1848 /*
1849  * EVP_PKEY
1850  */ struct evp_pkey_st *SSL_get_privatekey(const SSL *ssl);
1851
1852 __owur X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
1853 __owur EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
1854
1855 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
1856 __owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
1857 void SSL_set_quiet_shutdown(SSL *ssl, int mode);
1858 __owur int SSL_get_quiet_shutdown(const SSL *ssl);
1859 void SSL_set_shutdown(SSL *ssl, int mode);
1860 __owur int SSL_get_shutdown(const SSL *ssl);
1861 __owur int SSL_version(const SSL *ssl);
1862 __owur int SSL_client_version(const SSL *s);
1863 __owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
1864 __owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
1865 __owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
1866 __owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
1867                                   const char *CApath);
1868 # define SSL_get0_session SSL_get_session/* just peek at pointer */
1869 __owur SSL_SESSION *SSL_get_session(const SSL *ssl);
1870 __owur SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
1871 __owur SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
1872 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
1873 void SSL_set_info_callback(SSL *ssl,
1874                            void (*cb) (const SSL *ssl, int type, int val));
1875 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL *ssl, int type,
1876                                                int val);
1877 __owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
1878
1879 void SSL_set_verify_result(SSL *ssl, long v);
1880 __owur long SSL_get_verify_result(const SSL *ssl);
1881 __owur STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s);
1882
1883 __owur size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
1884                                     size_t outlen);
1885 __owur size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
1886                                     size_t outlen);
1887 __owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *ssl,
1888                                          unsigned char *out, size_t outlen);
1889 __owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
1890                                        const unsigned char *in, size_t len);
1891
1892 #define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
1893     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
1894 __owur int SSL_set_ex_data(SSL *ssl, int idx, void *data);
1895 void *SSL_get_ex_data(const SSL *ssl, int idx);
1896 #define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
1897     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
1898 __owur int SSL_SESSION_set_ex_data(SSL_SESSION *ss, int idx, void *data);
1899 void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss, int idx);
1900 #define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
1901     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
1902 __owur int SSL_CTX_set_ex_data(SSL_CTX *ssl, int idx, void *data);
1903 void *SSL_CTX_get_ex_data(const SSL_CTX *ssl, int idx);
1904
1905 __owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
1906
1907 # define SSL_CTX_sess_set_cache_size(ctx,t) \
1908         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
1909 # define SSL_CTX_sess_get_cache_size(ctx) \
1910         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
1911 # define SSL_CTX_set_session_cache_mode(ctx,m) \
1912         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
1913 # define SSL_CTX_get_session_cache_mode(ctx) \
1914         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
1915
1916 # define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
1917 # define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
1918 # define SSL_CTX_get_read_ahead(ctx) \
1919         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
1920 # define SSL_CTX_set_read_ahead(ctx,m) \
1921         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
1922 # define SSL_CTX_get_max_cert_list(ctx) \
1923         SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
1924 # define SSL_CTX_set_max_cert_list(ctx,m) \
1925         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
1926 # define SSL_get_max_cert_list(ssl) \
1927         SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
1928 # define SSL_set_max_cert_list(ssl,m) \
1929         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
1930
1931 # define SSL_CTX_set_max_send_fragment(ctx,m) \
1932         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
1933 # define SSL_set_max_send_fragment(ssl,m) \
1934         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
1935 # define SSL_CTX_set_split_send_fragment(ctx,m) \
1936         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
1937 # define SSL_set_split_send_fragment(ssl,m) \
1938         SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
1939 # define SSL_CTX_set_max_pipelines(ctx,m) \
1940         SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
1941 # define SSL_set_max_pipelines(ssl,m) \
1942         SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
1943
1944 void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
1945 void SSL_set_default_read_buffer_len(SSL *s, size_t len);
1946
1947 # ifndef OPENSSL_NO_DH
1948 /* NB: the |keylength| is only applicable when is_export is true */
1949 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
1950                                  DH *(*dh) (SSL *ssl, int is_export,
1951                                             int keylength));
1952 void SSL_set_tmp_dh_callback(SSL *ssl,
1953                              DH *(*dh) (SSL *ssl, int is_export,
1954                                         int keylength));
1955 # endif
1956
1957 __owur const COMP_METHOD *SSL_get_current_compression(SSL *s);
1958 __owur const COMP_METHOD *SSL_get_current_expansion(SSL *s);
1959 __owur const char *SSL_COMP_get_name(const COMP_METHOD *comp);
1960 __owur const char *SSL_COMP_get0_name(const SSL_COMP *comp);
1961 __owur int SSL_COMP_get_id(const SSL_COMP *comp);
1962 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
1963 __owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1964                                                       *meths);
1965 #if OPENSSL_API_COMPAT < 0x10100000L
1966 # define SSL_COMP_free_compression_methods() while(0) continue
1967 #endif
1968 __owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
1969
1970 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);
1971 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
1972 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
1973 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
1974                              int isv2format, STACK_OF(SSL_CIPHER) **sk,
1975                              STACK_OF(SSL_CIPHER) **scsvs);
1976
1977 /* TLS extensions functions */
1978 __owur int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);
1979
1980 __owur int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
1981                                   void *arg);
1982
1983 /* Pre-shared secret session resumption functions */
1984 __owur int SSL_set_session_secret_cb(SSL *s,
1985                               tls_session_secret_cb_fn tls_session_secret_cb,
1986                               void *arg);
1987
1988 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
1989                                                 int (*cb) (SSL *ssl,
1990                                                            int
1991                                                            is_forward_secure));
1992
1993 void SSL_set_not_resumable_session_callback(SSL *ssl,
1994                                             int (*cb) (SSL *ssl,
1995                                                        int
1996                                                        is_forward_secure));
1997
1998 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
1999                                          size_t (*cb) (SSL *ssl, int type,
2000                                                        size_t len, void *arg));
2001 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
2002 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx);
2003 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
2004
2005 void SSL_set_record_padding_callback(SSL *ssl,
2006                                     size_t (*cb) (SSL *ssl, int type,
2007                                                   size_t len, void *arg));
2008 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);
2009 void *SSL_get_record_padding_callback_arg(SSL *ssl);
2010 int SSL_set_block_padding(SSL *ssl, size_t block_size);
2011
2012 # if OPENSSL_API_COMPAT < 0x10100000L
2013 #  define SSL_cache_hit(s) SSL_session_reused(s)
2014 # endif
2015
2016 __owur int SSL_session_reused(SSL *s);
2017 __owur int SSL_is_server(const SSL *s);
2018
2019 __owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
2020 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
2021 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
2022 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
2023 __owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags);
2024 __owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);
2025
2026 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
2027 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);
2028
2029 __owur int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
2030 __owur int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);
2031 __owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd);
2032
2033 void SSL_add_ssl_module(void);
2034 int SSL_config(SSL *s, const char *name);
2035 int SSL_CTX_config(SSL_CTX *ctx, const char *name);
2036
2037 # ifndef OPENSSL_NO_SSL_TRACE
2038 void SSL_trace(int write_p, int version, int content_type,
2039                const void *buf, size_t len, SSL *ssl, void *arg);
2040 # endif
2041
2042 # ifndef OPENSSL_NO_SOCK
2043 int DTLSv1_listen(SSL *s, BIO_ADDR *client);
2044 # endif
2045
2046 # ifndef OPENSSL_NO_CT
2047
2048 /*
2049  * A callback for verifying that the received SCTs are sufficient.
2050  * Expected to return 1 if they are sufficient, otherwise 0.
2051  * May return a negative integer if an error occurs.
2052  * A connection should be aborted if the SCTs are deemed insufficient.
2053  */
2054 typedef int(*ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
2055                                    const STACK_OF(SCT) *scts, void *arg);
2056
2057 /*
2058  * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
2059  * the received SCTs.
2060  * If the callback returns a non-positive result, the connection is terminated.
2061  * Call this function before beginning a handshake.
2062  * If a NULL |callback| is provided, SCT validation is disabled.
2063  * |arg| is arbitrary userdata that will be passed to the callback whenever it
2064  * is invoked. Ownership of |arg| remains with the caller.
2065  *
2066  * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
2067  *       will be requested.
2068  */
2069 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
2070                                    void *arg);
2071 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
2072                                        ssl_ct_validation_cb callback,
2073                                        void *arg);
2074 #define SSL_disable_ct(s) \
2075         ((void) SSL_set_validation_callback((s), NULL, NULL))
2076 #define SSL_CTX_disable_ct(ctx) \
2077         ((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
2078
2079 /*
2080  * The validation type enumerates the available behaviours of the built-in SSL
2081  * CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
2082  * The underlying callback is a static function in libssl.
2083  */
2084 enum {
2085     SSL_CT_VALIDATION_PERMISSIVE = 0,
2086     SSL_CT_VALIDATION_STRICT
2087 };
2088
2089 /*
2090  * Enable CT by setting up a callback that implements one of the built-in
2091  * validation variants.  The SSL_CT_VALIDATION_PERMISSIVE variant always
2092  * continues the handshake, the application can make appropriate decisions at
2093  * handshake completion.  The SSL_CT_VALIDATION_STRICT variant requires at
2094  * least one valid SCT, or else handshake termination will be requested.  The
2095  * handshake may continue anyway if SSL_VERIFY_NONE is in effect.
2096  */
2097 int SSL_enable_ct(SSL *s, int validation_mode);
2098 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
2099
2100 /*
2101  * Report whether a non-NULL callback is enabled.
2102  */
2103 int SSL_ct_is_enabled(const SSL *s);
2104 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
2105
2106 /* Gets the SCTs received from a connection */
2107 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
2108
2109 /*
2110  * Loads the CT log list from the default location.
2111  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2112  * the log information loaded from this file will be appended to the
2113  * CTLOG_STORE.
2114  * Returns 1 on success, 0 otherwise.
2115  */
2116 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
2117
2118 /*
2119  * Loads the CT log list from the specified file path.
2120  * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2121  * the log information loaded from this file will be appended to the
2122  * CTLOG_STORE.
2123  * Returns 1 on success, 0 otherwise.
2124  */
2125 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
2126
2127 /*
2128  * Sets the CT log list used by all SSL connections created from this SSL_CTX.
2129  * Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
2130  */
2131 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs);
2132
2133 /*
2134  * Gets the CT log list used by all SSL connections created from this SSL_CTX.
2135  * This will be NULL unless one of the following functions has been called:
2136  * - SSL_CTX_set_default_ctlog_list_file
2137  * - SSL_CTX_set_ctlog_list_file
2138  * - SSL_CTX_set_ctlog_store
2139  */
2140 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx);
2141
2142 # endif /* OPENSSL_NO_CT */
2143
2144 /* What the "other" parameter contains in security callback */
2145 /* Mask for type */
2146 # define SSL_SECOP_OTHER_TYPE    0xffff0000
2147 # define SSL_SECOP_OTHER_NONE    0
2148 # define SSL_SECOP_OTHER_CIPHER  (1 << 16)
2149 # define SSL_SECOP_OTHER_CURVE   (2 << 16)
2150 # define SSL_SECOP_OTHER_DH      (3 << 16)
2151 # define SSL_SECOP_OTHER_PKEY    (4 << 16)
2152 # define SSL_SECOP_OTHER_SIGALG  (5 << 16)
2153 # define SSL_SECOP_OTHER_CERT    (6 << 16)
2154
2155 /* Indicated operation refers to peer key or certificate */
2156 # define SSL_SECOP_PEER          0x1000
2157
2158 /* Values for "op" parameter in security callback */
2159
2160 /* Called to filter ciphers */
2161 /* Ciphers client supports */
2162 # define SSL_SECOP_CIPHER_SUPPORTED      (1 | SSL_SECOP_OTHER_CIPHER)
2163 /* Cipher shared by client/server */
2164 # define SSL_SECOP_CIPHER_SHARED         (2 | SSL_SECOP_OTHER_CIPHER)
2165 /* Sanity check of cipher server selects */
2166 # define SSL_SECOP_CIPHER_CHECK          (3 | SSL_SECOP_OTHER_CIPHER)
2167 /* Curves supported by client */
2168 # define SSL_SECOP_CURVE_SUPPORTED       (4 | SSL_SECOP_OTHER_CURVE)
2169 /* Curves shared by client/server */
2170 # define SSL_SECOP_CURVE_SHARED          (5 | SSL_SECOP_OTHER_CURVE)
2171 /* Sanity check of curve server selects */
2172 # define SSL_SECOP_CURVE_CHECK           (6 | SSL_SECOP_OTHER_CURVE)
2173 /* Temporary DH key */
2174 # define SSL_SECOP_TMP_DH                (7 | SSL_SECOP_OTHER_PKEY)
2175 /* SSL/TLS version */
2176 # define SSL_SECOP_VERSION               (9 | SSL_SECOP_OTHER_NONE)
2177 /* Session tickets */
2178 # define SSL_SECOP_TICKET                (10 | SSL_SECOP_OTHER_NONE)
2179 /* Supported signature algorithms sent to peer */
2180 # define SSL_SECOP_SIGALG_SUPPORTED      (11 | SSL_SECOP_OTHER_SIGALG)
2181 /* Shared signature algorithm */
2182 # define SSL_SECOP_SIGALG_SHARED         (12 | SSL_SECOP_OTHER_SIGALG)
2183 /* Sanity check signature algorithm allowed */
2184 # define SSL_SECOP_SIGALG_CHECK          (13 | SSL_SECOP_OTHER_SIGALG)
2185 /* Used to get mask of supported public key signature algorithms */
2186 # define SSL_SECOP_SIGALG_MASK           (14 | SSL_SECOP_OTHER_SIGALG)
2187 /* Use to see if compression is allowed */
2188 # define SSL_SECOP_COMPRESSION           (15 | SSL_SECOP_OTHER_NONE)
2189 /* EE key in certificate */
2190 # define SSL_SECOP_EE_KEY                (16 | SSL_SECOP_OTHER_CERT)
2191 /* CA key in certificate */
2192 # define SSL_SECOP_CA_KEY                (17 | SSL_SECOP_OTHER_CERT)
2193 /* CA digest algorithm in certificate */
2194 # define SSL_SECOP_CA_MD                 (18 | SSL_SECOP_OTHER_CERT)
2195 /* Peer EE key in certificate */
2196 # define SSL_SECOP_PEER_EE_KEY           (SSL_SECOP_EE_KEY | SSL_SECOP_PEER)
2197 /* Peer CA key in certificate */
2198 # define SSL_SECOP_PEER_CA_KEY           (SSL_SECOP_CA_KEY | SSL_SECOP_PEER)
2199 /* Peer CA digest algorithm in certificate */
2200 # define SSL_SECOP_PEER_CA_MD            (SSL_SECOP_CA_MD | SSL_SECOP_PEER)
2201
2202 void SSL_set_security_level(SSL *s, int level);
2203 __owur int SSL_get_security_level(const SSL *s);
2204 void SSL_set_security_callback(SSL *s,
2205                                int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
2206                                           int bits, int nid, void *other,
2207                                           void *ex));
2208 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
2209                                                 int bits, int nid,
2210                                                 void *other, void *ex);
2211 void SSL_set0_security_ex_data(SSL *s, void *ex);
2212 __owur void *SSL_get0_security_ex_data(const SSL *s);
2213
2214 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
2215 __owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
2216 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
2217                                    int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
2218                                               int bits, int nid, void *other,
2219                                               void *ex));
2220 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
2221                                                           const SSL_CTX *ctx,
2222                                                           int op, int bits,
2223                                                           int nid,
2224                                                           void *other,
2225                                                           void *ex);
2226 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex);
2227 __owur void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx);
2228
2229 /* OPENSSL_INIT flag 0x010000 reserved for internal use */
2230 #define OPENSSL_INIT_NO_LOAD_SSL_STRINGS    0x00100000L
2231 #define OPENSSL_INIT_LOAD_SSL_STRINGS       0x00200000L
2232
2233 #define OPENSSL_INIT_SSL_DEFAULT \
2234         (OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
2235
2236 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
2237
2238 # ifndef OPENSSL_NO_UNIT_TEST
2239 __owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
2240 # endif
2241
2242 __owur int SSL_free_buffers(SSL *ssl);
2243 __owur int SSL_alloc_buffers(SSL *ssl);
2244
2245 extern const char SSL_version_str[];
2246
2247 int ERR_load_SSL_strings(void);
2248
2249 # ifdef  __cplusplus
2250 }
2251 # endif
2252 #endif