1 /* $OpenBSD: ssl_locl.h,v 1.425 2022/09/10 15:29:33 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #ifndef HEADER_SSL_LOCL_H 144 #define HEADER_SSL_LOCL_H 145 146 #include <sys/types.h> 147 148 #include <errno.h> 149 #include <stdlib.h> 150 #include <string.h> 151 #include <time.h> 152 #include <unistd.h> 153 154 #include <openssl/opensslconf.h> 155 156 #include <openssl/bio.h> 157 #include <openssl/buffer.h> 158 #include <openssl/dsa.h> 159 #include <openssl/err.h> 160 #include <openssl/rsa.h> 161 #include <openssl/ssl.h> 162 #include <openssl/stack.h> 163 164 #include "bytestring.h" 165 #include "tls13_internal.h" 166 167 __BEGIN_HIDDEN_DECLS 168 169 #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \ 170 __attribute__((__unused__)) 171 172 #ifndef LIBRESSL_HAS_DTLS1_2 173 #define LIBRESSL_HAS_DTLS1_2 174 #endif 175 176 #ifndef LIBRESSL_HAS_TLS1_3_CLIENT 177 #define LIBRESSL_HAS_TLS1_3_CLIENT 178 #endif 179 180 #ifndef LIBRESSL_HAS_TLS1_3_SERVER 181 #define LIBRESSL_HAS_TLS1_3_SERVER 182 #endif 183 184 #if defined(LIBRESSL_HAS_TLS1_3_CLIENT) || defined(LIBRESSL_HAS_TLS1_3_SERVER) 185 #define LIBRESSL_HAS_TLS1_3 186 #endif 187 188 /* LOCAL STUFF */ 189 190 #define SSL_DECRYPT 0 191 #define SSL_ENCRYPT 1 192 193 /* 194 * Define the Bitmasks for SSL_CIPHER.algorithms. 195 * This bits are used packed as dense as possible. If new methods/ciphers 196 * etc will be added, the bits a likely to change, so this information 197 * is for internal library use only, even though SSL_CIPHER.algorithms 198 * can be publicly accessed. 199 * Use the according functions for cipher management instead. 200 * 201 * The bit mask handling in the selection and sorting scheme in 202 * ssl_create_cipher_list() has only limited capabilities, reflecting 203 * that the different entities within are mutually exclusive: 204 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 205 */ 206 207 /* Bits for algorithm_mkey (key exchange algorithm) */ 208 #define SSL_kRSA 0x00000001L /* RSA key exchange */ 209 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ 210 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ 211 #define SSL_kGOST 0x00000200L /* GOST key exchange */ 212 #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */ 213 214 /* Bits for algorithm_auth (server authentication) */ 215 #define SSL_aRSA 0x00000001L /* RSA auth */ 216 #define SSL_aDSS 0x00000002L /* DSS auth */ 217 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ 218 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ 219 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ 220 #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */ 221 222 /* Bits for algorithm_enc (symmetric encryption) */ 223 #define SSL_DES 0x00000001L 224 #define SSL_3DES 0x00000002L 225 #define SSL_RC4 0x00000004L 226 #define SSL_IDEA 0x00000008L 227 #define SSL_eNULL 0x00000010L 228 #define SSL_AES128 0x00000020L 229 #define SSL_AES256 0x00000040L 230 #define SSL_CAMELLIA128 0x00000080L 231 #define SSL_CAMELLIA256 0x00000100L 232 #define SSL_eGOST2814789CNT 0x00000200L 233 #define SSL_AES128GCM 0x00000400L 234 #define SSL_AES256GCM 0x00000800L 235 #define SSL_CHACHA20POLY1305 0x00001000L 236 237 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) 238 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 239 240 241 /* Bits for algorithm_mac (symmetric authentication) */ 242 243 #define SSL_MD5 0x00000001L 244 #define SSL_SHA1 0x00000002L 245 #define SSL_GOST94 0x00000004L 246 #define SSL_GOST89MAC 0x00000008L 247 #define SSL_SHA256 0x00000010L 248 #define SSL_SHA384 0x00000020L 249 /* Not a real MAC, just an indication it is part of cipher */ 250 #define SSL_AEAD 0x00000040L 251 #define SSL_STREEBOG256 0x00000080L 252 253 /* Bits for algorithm_ssl (protocol version) */ 254 #define SSL_SSLV3 0x00000002L 255 #define SSL_TLSV1 SSL_SSLV3 /* for now */ 256 #define SSL_TLSV1_2 0x00000004L 257 #define SSL_TLSV1_3 0x00000008L 258 259 260 /* Bits for algorithm2 (handshake digests and other extra flags) */ 261 262 #define SSL_HANDSHAKE_MAC_MASK 0xff0 263 #define SSL_HANDSHAKE_MAC_MD5 0x010 264 #define SSL_HANDSHAKE_MAC_SHA 0x020 265 #define SSL_HANDSHAKE_MAC_GOST94 0x040 266 #define SSL_HANDSHAKE_MAC_SHA256 0x080 267 #define SSL_HANDSHAKE_MAC_SHA384 0x100 268 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 269 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) 270 271 #define SSL3_CK_ID 0x03000000 272 #define SSL3_CK_VALUE_MASK 0x0000ffff 273 274 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) 275 276 #define TLS1_PRF_DGST_SHIFT 10 277 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) 278 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) 279 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) 280 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) 281 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) 282 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) 283 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) 284 285 /* 286 * Stream MAC for GOST ciphersuites from cryptopro draft 287 * (currently this also goes into algorithm2). 288 */ 289 #define TLS1_STREAM_MAC 0x04 290 291 /* 292 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that 293 * indicates that the variable part of the nonce is included as a prefix of 294 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) 295 */ 296 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) 297 298 /* 299 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce 300 * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD. 301 */ 302 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ 303 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) 304 305 /* 306 * Cipher strength information. 307 */ 308 #define SSL_STRONG_MASK 0x000001fcL 309 #define SSL_STRONG_NONE 0x00000004L 310 #define SSL_LOW 0x00000020L 311 #define SSL_MEDIUM 0x00000040L 312 #define SSL_HIGH 0x00000080L 313 314 /* 315 * The keylength (measured in RSA key bits, I guess) for temporary keys. 316 * Cipher argument is so that this can be variable in the future. 317 */ 318 #define SSL_C_PKEYLENGTH(c) 1024 319 320 /* See if we use signature algorithms extension. */ 321 #define SSL_USE_SIGALGS(s) \ 322 (s->method->enc_flags & SSL_ENC_FLAG_SIGALGS) 323 324 /* See if we use SHA256 default PRF. */ 325 #define SSL_USE_SHA256_PRF(s) \ 326 (s->method->enc_flags & SSL_ENC_FLAG_SHA256_PRF) 327 328 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 329 #define SSL_USE_TLS1_2_CIPHERS(s) \ 330 (s->method->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 331 332 /* Allow TLS 1.3 ciphersuites only. */ 333 #define SSL_USE_TLS1_3_CIPHERS(s) \ 334 (s->method->enc_flags & SSL_ENC_FLAG_TLS1_3_CIPHERS) 335 336 #define SSL_PKEY_RSA 0 337 #define SSL_PKEY_ECC 1 338 #define SSL_PKEY_GOST01 2 339 #define SSL_PKEY_NUM 3 340 341 #define SSL_MAX_EMPTY_RECORDS 32 342 343 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | 344 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) 345 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 346 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 347 * SSL_aRSA <- RSA_ENC | RSA_SIGN 348 * SSL_aDSS <- DSA_SIGN 349 */ 350 351 /* From ECC-TLS draft, used in encoding the curve type in 352 * ECParameters 353 */ 354 #define EXPLICIT_PRIME_CURVE_TYPE 1 355 #define EXPLICIT_CHAR2_CURVE_TYPE 2 356 #define NAMED_CURVE_TYPE 3 357 358 typedef struct ssl_cert_pkey_st { 359 X509 *x509; 360 EVP_PKEY *privatekey; 361 STACK_OF(X509) *chain; 362 } SSL_CERT_PKEY; 363 364 typedef struct ssl_cert_st { 365 /* Current active set */ 366 /* ALWAYS points to an element of the pkeys array 367 * Probably it would make more sense to store 368 * an index, not a pointer. */ 369 SSL_CERT_PKEY *key; 370 371 SSL_CERT_PKEY pkeys[SSL_PKEY_NUM]; 372 373 /* The following masks are for the key and auth 374 * algorithms that are supported by the certs below */ 375 int valid; 376 unsigned long mask_k; 377 unsigned long mask_a; 378 379 DH *dhe_params; 380 DH *(*dhe_params_cb)(SSL *ssl, int is_export, int keysize); 381 int dhe_params_auto; 382 383 int (*security_cb)(const SSL *s, const SSL_CTX *ctx, int op, int bits, 384 int nid, void *other, void *ex_data); /* Not exposed in API. */ 385 int security_level; 386 void *security_ex_data; /* Not exposed in API. */ 387 388 int references; /* >1 only if SSL_copy_session_id is used */ 389 } SSL_CERT; 390 391 struct ssl_comp_st { 392 int id; 393 const char *name; 394 }; 395 396 struct ssl_cipher_st { 397 int valid; 398 const char *name; /* text name */ 399 unsigned long id; /* id, 4 bytes, first is version */ 400 401 unsigned long algorithm_mkey; /* key exchange algorithm */ 402 unsigned long algorithm_auth; /* server authentication */ 403 unsigned long algorithm_enc; /* symmetric encryption */ 404 unsigned long algorithm_mac; /* symmetric authentication */ 405 unsigned long algorithm_ssl; /* (major) protocol version */ 406 407 unsigned long algo_strength; /* strength and export flags */ 408 unsigned long algorithm2; /* Extra flags */ 409 int strength_bits; /* Number of bits really used */ 410 int alg_bits; /* Number of bits for algorithm */ 411 }; 412 413 struct ssl_method_st { 414 int dtls; 415 int server; 416 int version; 417 418 uint16_t min_tls_version; 419 uint16_t max_tls_version; 420 421 int (*ssl_new)(SSL *s); 422 void (*ssl_clear)(SSL *s); 423 void (*ssl_free)(SSL *s); 424 425 int (*ssl_accept)(SSL *s); 426 int (*ssl_connect)(SSL *s); 427 int (*ssl_shutdown)(SSL *s); 428 429 int (*ssl_renegotiate)(SSL *s); 430 int (*ssl_renegotiate_check)(SSL *s); 431 432 int (*ssl_pending)(const SSL *s); 433 int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, int len, 434 int peek); 435 int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len); 436 437 const SSL_CIPHER *(*get_cipher)(unsigned int ncipher); 438 439 unsigned int enc_flags; /* SSL_ENC_FLAG_* */ 440 }; 441 442 /* 443 * Let's make this into an ASN.1 type structure as follows 444 * SSL_SESSION_ID ::= SEQUENCE { 445 * version INTEGER, -- structure version number 446 * SSLversion INTEGER, -- SSL version number 447 * Cipher OCTET STRING, -- the 2 byte cipher ID 448 * Session_ID OCTET STRING, -- the Session ID 449 * Master_key OCTET STRING, -- the master key 450 * KRB5_principal OCTET STRING -- optional Kerberos principal 451 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time 452 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds 453 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate 454 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context 455 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' 456 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension 457 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint 458 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity 459 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket 460 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) 461 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method 462 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username 463 * } 464 * Look in ssl/ssl_asn1.c for more details 465 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). 466 */ 467 struct ssl_session_st { 468 int ssl_version; /* what ssl version session info is 469 * being kept in here? */ 470 471 size_t master_key_length; 472 unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH]; 473 474 /* session_id - valid? */ 475 size_t session_id_length; 476 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 477 478 /* this is used to determine whether the session is being reused in 479 * the appropriate context. It is up to the application to set this, 480 * via SSL_new */ 481 size_t sid_ctx_length; 482 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 483 484 /* Peer provided leaf (end-entity) certificate. */ 485 X509 *peer_cert; 486 int peer_cert_type; 487 488 /* when app_verify_callback accepts a session where the peer's certificate 489 * is not ok, we must remember the error for session reuse: */ 490 long verify_result; /* only for servers */ 491 492 long timeout; 493 time_t time; 494 int references; 495 496 const SSL_CIPHER *cipher; 497 unsigned long cipher_id; /* when ASN.1 loaded, this 498 * needs to be used to load 499 * the 'cipher' structure */ 500 501 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */ 502 503 char *tlsext_hostname; 504 505 /* RFC4507 info */ 506 unsigned char *tlsext_tick; /* Session ticket */ 507 size_t tlsext_ticklen; /* Session ticket length */ 508 uint32_t tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */ 509 510 CRYPTO_EX_DATA ex_data; /* application specific data */ 511 512 /* These are used to make removal of session-ids more 513 * efficient and to implement a maximum cache size. */ 514 struct ssl_session_st *prev, *next; 515 516 /* Used to indicate that session resumption is not allowed. 517 * Applications can also set this bit for a new session via 518 * not_resumable_session_cb to disable session caching and tickets. */ 519 int not_resumable; 520 521 size_t tlsext_ecpointformatlist_length; 522 uint8_t *tlsext_ecpointformatlist; /* peer's list */ 523 size_t tlsext_supportedgroups_length; 524 uint16_t *tlsext_supportedgroups; /* peer's list */ 525 }; 526 527 struct ssl_sigalg; 528 529 typedef struct ssl_handshake_tls12_st { 530 /* Used when SSL_ST_FLUSH_DATA is entered. */ 531 int next_state; 532 533 /* Handshake message type and size. */ 534 int message_type; 535 unsigned long message_size; 536 537 /* Reuse current handshake message. */ 538 int reuse_message; 539 540 /* Client certificate requests. */ 541 int cert_request; 542 STACK_OF(X509_NAME) *ca_names; 543 544 /* Record-layer key block for TLS 1.2 and earlier. */ 545 struct tls12_key_block *key_block; 546 547 /* Transcript hash prior to sending certificate verify message. */ 548 uint8_t cert_verify[EVP_MAX_MD_SIZE]; 549 } SSL_HANDSHAKE_TLS12; 550 551 typedef struct ssl_handshake_tls13_st { 552 int use_legacy; 553 int hrr; 554 555 /* Client indicates psk_dhe_ke support in PskKeyExchangeMode. */ 556 int use_psk_dhe_ke; 557 558 /* Certificate selected for use (static pointer). */ 559 const SSL_CERT_PKEY *cpk; 560 561 /* Version proposed by peer server. */ 562 uint16_t server_version; 563 564 uint16_t server_group; 565 struct tls13_secrets *secrets; 566 567 uint8_t *cookie; 568 size_t cookie_len; 569 570 /* Preserved transcript hash. */ 571 uint8_t transcript_hash[EVP_MAX_MD_SIZE]; 572 size_t transcript_hash_len; 573 574 /* Legacy session ID. */ 575 uint8_t legacy_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 576 size_t legacy_session_id_len; 577 578 /* ClientHello hash, used to validate following HelloRetryRequest */ 579 EVP_MD_CTX *clienthello_md_ctx; 580 unsigned char *clienthello_hash; 581 unsigned int clienthello_hash_len; 582 583 /* QUIC read buffer and read/write encryption levels. */ 584 struct tls_buffer *quic_read_buffer; 585 enum ssl_encryption_level_t quic_read_level; 586 enum ssl_encryption_level_t quic_write_level; 587 } SSL_HANDSHAKE_TLS13; 588 589 typedef struct ssl_handshake_st { 590 /* 591 * Minimum and maximum versions supported for this handshake. These are 592 * initialised at the start of a handshake based on the method in use 593 * and the current protocol version configuration. 594 */ 595 uint16_t our_min_tls_version; 596 uint16_t our_max_tls_version; 597 598 /* 599 * Version negotiated for this session. For a client this is set once 600 * the server selected version is parsed from the ServerHello (either 601 * from the legacy version or supported versions extension). For a 602 * server this is set once we select the version we will use with the 603 * client. 604 */ 605 uint16_t negotiated_tls_version; 606 607 /* 608 * Legacy version advertised by our peer. For a server this is the 609 * version specified by the client in the ClientHello message. For a 610 * client, this is the version provided in the ServerHello message. 611 */ 612 uint16_t peer_legacy_version; 613 614 /* 615 * Current handshake state - contains one of the SSL3_ST_* values and 616 * is used by the TLSv1.2 state machine, as well as being updated by 617 * the TLSv1.3 stack due to it being exposed externally. 618 */ 619 int state; 620 621 /* Cipher being negotiated in this handshake. */ 622 const SSL_CIPHER *cipher; 623 624 /* Extensions seen in this handshake. */ 625 uint32_t extensions_seen; 626 627 /* Signature algorithms selected for use (static pointers). */ 628 const struct ssl_sigalg *our_sigalg; 629 const struct ssl_sigalg *peer_sigalg; 630 631 /* sigalgs offered in this handshake in wire form */ 632 uint8_t *sigalgs; 633 size_t sigalgs_len; 634 635 /* Key share for ephemeral key exchange. */ 636 struct tls_key_share *key_share; 637 638 /* 639 * Copies of the verify data sent in our finished message and the 640 * verify data received in the finished message sent by our peer. 641 */ 642 uint8_t finished[EVP_MAX_MD_SIZE]; 643 size_t finished_len; 644 uint8_t peer_finished[EVP_MAX_MD_SIZE]; 645 size_t peer_finished_len; 646 647 /* List of certificates received from our peer. */ 648 STACK_OF(X509) *peer_certs; 649 STACK_OF(X509) *peer_certs_no_leaf; 650 651 SSL_HANDSHAKE_TLS12 tls12; 652 SSL_HANDSHAKE_TLS13 tls13; 653 } SSL_HANDSHAKE; 654 655 typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT; 656 657 /* TLS Session Ticket extension struct. */ 658 struct tls_session_ticket_ext_st { 659 unsigned short length; 660 void *data; 661 }; 662 663 struct tls12_key_block; 664 665 struct tls12_key_block *tls12_key_block_new(void); 666 void tls12_key_block_free(struct tls12_key_block *kb); 667 void tls12_key_block_client_write(struct tls12_key_block *kb, CBS *mac_key, 668 CBS *key, CBS *iv); 669 void tls12_key_block_server_write(struct tls12_key_block *kb, CBS *mac_key, 670 CBS *key, CBS *iv); 671 int tls12_key_block_generate(struct tls12_key_block *kb, SSL *s, 672 const EVP_AEAD *aead, const EVP_CIPHER *cipher, const EVP_MD *mac_hash); 673 674 struct tls12_record_layer; 675 676 struct tls12_record_layer *tls12_record_layer_new(void); 677 void tls12_record_layer_free(struct tls12_record_layer *rl); 678 void tls12_record_layer_alert(struct tls12_record_layer *rl, 679 uint8_t *alert_desc); 680 int tls12_record_layer_write_overhead(struct tls12_record_layer *rl, 681 size_t *overhead); 682 int tls12_record_layer_read_protected(struct tls12_record_layer *rl); 683 int tls12_record_layer_write_protected(struct tls12_record_layer *rl); 684 void tls12_record_layer_set_aead(struct tls12_record_layer *rl, 685 const EVP_AEAD *aead); 686 void tls12_record_layer_set_cipher_hash(struct tls12_record_layer *rl, 687 const EVP_CIPHER *cipher, const EVP_MD *handshake_hash, 688 const EVP_MD *mac_hash); 689 void tls12_record_layer_set_version(struct tls12_record_layer *rl, 690 uint16_t version); 691 void tls12_record_layer_set_initial_epoch(struct tls12_record_layer *rl, 692 uint16_t epoch); 693 uint16_t tls12_record_layer_read_epoch(struct tls12_record_layer *rl); 694 uint16_t tls12_record_layer_write_epoch(struct tls12_record_layer *rl); 695 int tls12_record_layer_use_write_epoch(struct tls12_record_layer *rl, 696 uint16_t epoch); 697 void tls12_record_layer_write_epoch_done(struct tls12_record_layer *rl, 698 uint16_t epoch); 699 void tls12_record_layer_clear_read_state(struct tls12_record_layer *rl); 700 void tls12_record_layer_clear_write_state(struct tls12_record_layer *rl); 701 void tls12_record_layer_reflect_seq_num(struct tls12_record_layer *rl); 702 int tls12_record_layer_change_read_cipher_state(struct tls12_record_layer *rl, 703 CBS *mac_key, CBS *key, CBS *iv); 704 int tls12_record_layer_change_write_cipher_state(struct tls12_record_layer *rl, 705 CBS *mac_key, CBS *key, CBS *iv); 706 int tls12_record_layer_open_record(struct tls12_record_layer *rl, 707 uint8_t *buf, size_t buf_len, uint8_t **out, size_t *out_len); 708 int tls12_record_layer_seal_record(struct tls12_record_layer *rl, 709 uint8_t content_type, const uint8_t *content, size_t content_len, 710 CBB *out); 711 712 typedef void (ssl_info_callback_fn)(const SSL *s, int type, int val); 713 typedef void (ssl_msg_callback_fn)(int is_write, int version, int content_type, 714 const void *buf, size_t len, SSL *ssl, void *arg); 715 716 typedef struct ssl_ctx_internal_st { 717 uint16_t min_tls_version; 718 uint16_t max_tls_version; 719 720 /* 721 * These may be zero to imply minimum or maximum version supported by 722 * the method. 723 */ 724 uint16_t min_proto_version; 725 uint16_t max_proto_version; 726 727 unsigned long options; 728 unsigned long mode; 729 730 /* If this callback is not null, it will be called each 731 * time a session id is added to the cache. If this function 732 * returns 1, it means that the callback will do a 733 * SSL_SESSION_free() when it has finished using it. Otherwise, 734 * on 0, it means the callback has finished with it. 735 * If remove_session_cb is not null, it will be called when 736 * a session-id is removed from the cache. After the call, 737 * OpenSSL will SSL_SESSION_free() it. */ 738 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess); 739 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess); 740 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, 741 const unsigned char *data, int len, int *copy); 742 743 /* if defined, these override the X509_verify_cert() calls */ 744 int (*app_verify_callback)(X509_STORE_CTX *, void *); 745 void *app_verify_arg; 746 747 /* get client cert callback */ 748 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey); 749 750 /* cookie generate callback */ 751 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 752 unsigned int *cookie_len); 753 754 /* verify cookie callback */ 755 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie, 756 unsigned int cookie_len); 757 758 ssl_info_callback_fn *info_callback; 759 760 /* callback that allows applications to peek at protocol messages */ 761 ssl_msg_callback_fn *msg_callback; 762 void *msg_callback_arg; 763 764 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ 765 766 /* Default generate session ID callback. */ 767 GEN_SESSION_CB generate_session_id; 768 769 /* TLS extensions servername callback */ 770 int (*tlsext_servername_callback)(SSL*, int *, void *); 771 void *tlsext_servername_arg; 772 773 /* Callback to support customisation of ticket key setting */ 774 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name, 775 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 776 777 /* certificate status request info */ 778 /* Callback for status request */ 779 int (*tlsext_status_cb)(SSL *ssl, void *arg); 780 void *tlsext_status_arg; 781 782 struct lhash_st_SSL_SESSION *sessions; 783 784 /* Most session-ids that will be cached, default is 785 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ 786 unsigned long session_cache_size; 787 struct ssl_session_st *session_cache_head; 788 struct ssl_session_st *session_cache_tail; 789 790 /* This can have one of 2 values, ored together, 791 * SSL_SESS_CACHE_CLIENT, 792 * SSL_SESS_CACHE_SERVER, 793 * Default is SSL_SESSION_CACHE_SERVER, which means only 794 * SSL_accept which cache SSL_SESSIONS. */ 795 int session_cache_mode; 796 797 struct { 798 int sess_connect; /* SSL new conn - started */ 799 int sess_connect_renegotiate;/* SSL reneg - requested */ 800 int sess_connect_good; /* SSL new conne/reneg - finished */ 801 int sess_accept; /* SSL new accept - started */ 802 int sess_accept_renegotiate;/* SSL reneg - requested */ 803 int sess_accept_good; /* SSL accept/reneg - finished */ 804 int sess_miss; /* session lookup misses */ 805 int sess_timeout; /* reuse attempt on timeouted session */ 806 int sess_cache_full; /* session removed due to full cache */ 807 int sess_hit; /* session reuse actually done */ 808 int sess_cb_hit; /* session-id that was not 809 * in the cache was 810 * passed back via the callback. This 811 * indicates that the application is 812 * supplying session-id's from other 813 * processes - spooky :-) */ 814 } stats; 815 816 CRYPTO_EX_DATA ex_data; 817 818 STACK_OF(SSL_CIPHER) *cipher_list_tls13; 819 820 SSL_CERT *cert; 821 822 /* Default values used when no per-SSL value is defined follow */ 823 824 /* what we put in client cert requests */ 825 STACK_OF(X509_NAME) *client_CA; 826 827 long max_cert_list; 828 829 int read_ahead; 830 831 int quiet_shutdown; 832 833 /* Maximum amount of data to send in one fragment. 834 * actual record size can be more than this due to 835 * padding and MAC overheads. 836 */ 837 unsigned int max_send_fragment; 838 839 #ifndef OPENSSL_NO_ENGINE 840 /* Engine to pass requests for client certs to 841 */ 842 ENGINE *client_cert_engine; 843 #endif 844 845 /* RFC 4507 session ticket keys */ 846 unsigned char tlsext_tick_key_name[16]; 847 unsigned char tlsext_tick_hmac_key[16]; 848 unsigned char tlsext_tick_aes_key[16]; 849 850 /* SRTP profiles we are willing to do from RFC 5764 */ 851 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 852 853 /* 854 * ALPN information. 855 */ 856 857 /* 858 * Server callback function that allows the server to select the 859 * protocol for the connection. 860 * out: on successful return, this must point to the raw protocol 861 * name (without the length prefix). 862 * outlen: on successful return, this contains the length of out. 863 * in: points to the client's list of supported protocols in 864 * wire-format. 865 * inlen: the length of in. 866 */ 867 int (*alpn_select_cb)(SSL *s, const unsigned char **out, 868 unsigned char *outlen, const unsigned char *in, unsigned int inlen, 869 void *arg); 870 void *alpn_select_cb_arg; 871 872 /* Client list of supported protocols in wire format. */ 873 uint8_t *alpn_client_proto_list; 874 size_t alpn_client_proto_list_len; 875 876 size_t tlsext_ecpointformatlist_length; 877 uint8_t *tlsext_ecpointformatlist; /* our list */ 878 size_t tlsext_supportedgroups_length; 879 uint16_t *tlsext_supportedgroups; /* our list */ 880 SSL_CTX_keylog_cb_func keylog_callback; /* Unused. For OpenSSL compatibility. */ 881 size_t num_tickets; /* Unused, for OpenSSL compatibility */ 882 } SSL_CTX_INTERNAL; 883 884 struct ssl_ctx_st { 885 const SSL_METHOD *method; 886 const SSL_QUIC_METHOD *quic_method; 887 888 STACK_OF(SSL_CIPHER) *cipher_list; 889 890 struct x509_store_st /* X509_STORE */ *cert_store; 891 892 /* If timeout is not 0, it is the default timeout value set 893 * when SSL_new() is called. This has been put in to make 894 * life easier to set things up */ 895 long session_timeout; 896 897 int references; 898 899 /* Default values to use in SSL structures follow (these are copied by SSL_new) */ 900 901 STACK_OF(X509) *extra_certs; 902 903 int verify_mode; 904 size_t sid_ctx_length; 905 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 906 907 X509_VERIFY_PARAM *param; 908 909 /* 910 * XXX 911 * default_passwd_cb used by python and openvpn, need to keep it until we 912 * add an accessor 913 */ 914 /* Default password callback. */ 915 pem_password_cb *default_passwd_callback; 916 917 /* Default password callback user data. */ 918 void *default_passwd_callback_userdata; 919 920 struct ssl_ctx_internal_st *internal; 921 }; 922 923 typedef struct ssl_internal_st { 924 struct tls13_ctx *tls13; 925 926 uint16_t min_tls_version; 927 uint16_t max_tls_version; 928 929 /* 930 * These may be zero to imply minimum or maximum version supported by 931 * the method. 932 */ 933 uint16_t min_proto_version; 934 uint16_t max_proto_version; 935 936 unsigned long options; /* protocol behaviour */ 937 unsigned long mode; /* API behaviour */ 938 939 /* Client list of supported protocols in wire format. */ 940 uint8_t *alpn_client_proto_list; 941 size_t alpn_client_proto_list_len; 942 943 /* QUIC transport params we will send */ 944 uint8_t *quic_transport_params; 945 size_t quic_transport_params_len; 946 947 /* XXX Callbacks */ 948 949 /* true when we are actually in SSL_accept() or SSL_connect() */ 950 int in_handshake; 951 int (*handshake_func)(SSL *); 952 953 ssl_info_callback_fn *info_callback; 954 955 /* callback that allows applications to peek at protocol messages */ 956 ssl_msg_callback_fn *msg_callback; 957 void *msg_callback_arg; 958 959 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ 960 961 /* Default generate session ID callback. */ 962 GEN_SESSION_CB generate_session_id; 963 964 /* TLS extension debug callback */ 965 void (*tlsext_debug_cb)(SSL *s, int client_server, int type, 966 unsigned char *data, int len, void *arg); 967 void *tlsext_debug_arg; 968 969 /* TLS Session Ticket extension callback */ 970 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; 971 void *tls_session_ticket_ext_cb_arg; 972 973 /* TLS pre-shared secret session resumption */ 974 tls_session_secret_cb_fn tls_session_secret_cb; 975 void *tls_session_secret_cb_arg; 976 977 /* XXX non-callback */ 978 979 /* This holds a variable that indicates what we were doing 980 * when a 0 or -1 is returned. This is needed for 981 * non-blocking IO so we know what request needs re-doing when 982 * in SSL_accept or SSL_connect */ 983 int rwstate; 984 985 /* Imagine that here's a boolean member "init" that is 986 * switched as soon as SSL_set_{accept/connect}_state 987 * is called for the first time, so that "state" and 988 * "handshake_func" are properly initialized. But as 989 * handshake_func is == 0 until then, we use this 990 * test instead of an "init" member. 991 */ 992 993 int new_session;/* Generate a new session or reuse an old one. 994 * NB: For servers, the 'new' session may actually be a previously 995 * cached session or even the previous session unless 996 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */ 997 int quiet_shutdown;/* don't send shutdown packets */ 998 int shutdown; /* we have shut things down, 0x01 sent, 0x02 999 * for received */ 1000 BUF_MEM *init_buf; /* buffer used during init */ 1001 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ 1002 int init_num; /* amount read/written */ 1003 int init_off; /* amount read/written */ 1004 1005 /* used internally to point at a raw packet */ 1006 unsigned char *packet; 1007 unsigned int packet_length; 1008 1009 int read_ahead; /* Read as many input bytes as possible 1010 * (for non-blocking reads) */ 1011 1012 int hit; /* reusing a previous session */ 1013 1014 STACK_OF(SSL_CIPHER) *cipher_list_tls13; 1015 1016 struct tls12_record_layer *rl; 1017 1018 /* session info */ 1019 1020 /* extra application data */ 1021 CRYPTO_EX_DATA ex_data; 1022 1023 /* client cert? */ 1024 /* for server side, keep the list of CA_dn we can use */ 1025 STACK_OF(X509_NAME) *client_CA; 1026 1027 /* set this flag to 1 and a sleep(1) is put into all SSL_read() 1028 * and SSL_write() calls, good for nbio debuging :-) */ 1029 int debug; 1030 long max_cert_list; 1031 int first_packet; 1032 1033 /* Expect OCSP CertificateStatus message */ 1034 int tlsext_status_expected; 1035 /* OCSP status request only */ 1036 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; 1037 X509_EXTENSIONS *tlsext_ocsp_exts; 1038 1039 /* OCSP response received or to be sent */ 1040 unsigned char *tlsext_ocsp_resp; 1041 size_t tlsext_ocsp_resp_len; 1042 1043 /* RFC4507 session ticket expected to be received or sent */ 1044 int tlsext_ticket_expected; 1045 1046 size_t tlsext_ecpointformatlist_length; 1047 uint8_t *tlsext_ecpointformatlist; /* our list */ 1048 size_t tlsext_supportedgroups_length; 1049 uint16_t *tlsext_supportedgroups; /* our list */ 1050 1051 /* TLS Session Ticket extension override */ 1052 TLS_SESSION_TICKET_EXT *tlsext_session_ticket; 1053 1054 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ 1055 const SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ 1056 1057 int renegotiate;/* 1 if we are renegotiating. 1058 * 2 if we are a server and are inside a handshake 1059 * (i.e. not just sending a HelloRequest) */ 1060 1061 int rstate; /* where we are when reading */ 1062 1063 int mac_packet; 1064 1065 int empty_record_count; 1066 1067 size_t num_tickets; /* Unused, for OpenSSL compatibility */ 1068 STACK_OF(X509) *verified_chain; 1069 } SSL_INTERNAL; 1070 1071 struct ssl_st { 1072 /* protocol version 1073 * (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, DTLS1_VERSION) 1074 */ 1075 int version; 1076 1077 const SSL_METHOD *method; 1078 const SSL_QUIC_METHOD *quic_method; 1079 1080 /* There are 2 BIO's even though they are normally both the 1081 * same. This is so data can be read and written to different 1082 * handlers */ 1083 1084 BIO *rbio; /* used by SSL_read */ 1085 BIO *wbio; /* used by SSL_write */ 1086 BIO *bbio; /* used during session-id reuse to concatenate 1087 * messages */ 1088 int server; /* are we the server side? - mostly used by SSL_clear*/ 1089 1090 struct ssl3_state_st *s3; /* SSLv3 variables */ 1091 struct dtls1_state_st *d1; /* DTLSv1 variables */ 1092 1093 X509_VERIFY_PARAM *param; 1094 1095 /* crypto */ 1096 STACK_OF(SSL_CIPHER) *cipher_list; 1097 1098 /* This is used to hold the server certificate used */ 1099 SSL_CERT *cert; 1100 1101 /* the session_id_context is used to ensure sessions are only reused 1102 * in the appropriate context */ 1103 size_t sid_ctx_length; 1104 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 1105 1106 /* This can also be in the session once a session is established */ 1107 SSL_SESSION *session; 1108 1109 /* Used in SSL2 and SSL3 */ 1110 int verify_mode; /* 0 don't care about verify failure. 1111 * 1 fail if verify fails */ 1112 int error; /* error bytes to be written */ 1113 int error_code; /* actual code */ 1114 1115 SSL_CTX *ctx; 1116 1117 long verify_result; 1118 1119 int references; 1120 1121 int client_version; /* what was passed, used for 1122 * SSLv3/TLS rollback check */ 1123 1124 unsigned int max_send_fragment; 1125 1126 char *tlsext_hostname; 1127 1128 /* certificate status request info */ 1129 /* Status type or -1 if no status type */ 1130 int tlsext_status_type; 1131 1132 SSL_CTX * initial_ctx; /* initial ctx, used to store sessions */ 1133 #define session_ctx initial_ctx 1134 1135 struct ssl_internal_st *internal; 1136 }; 1137 1138 typedef struct ssl3_record_internal_st { 1139 int type; /* type of record */ 1140 unsigned int length; /* How many bytes available */ 1141 unsigned int padding_length; /* Number of padding bytes. */ 1142 unsigned int off; /* read/write offset into 'buf' */ 1143 unsigned char *data; /* pointer to the record data */ 1144 unsigned char *input; /* where the decode bytes are */ 1145 uint16_t epoch; /* epoch number, needed by DTLS1 */ 1146 unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 1147 } SSL3_RECORD_INTERNAL; 1148 1149 typedef struct ssl3_buffer_internal_st { 1150 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 1151 * see ssl3_setup_buffers() */ 1152 size_t len; /* buffer size */ 1153 int offset; /* where to 'copy from' */ 1154 int left; /* how many bytes left */ 1155 } SSL3_BUFFER_INTERNAL; 1156 1157 typedef struct ssl3_state_st { 1158 long flags; 1159 1160 unsigned char server_random[SSL3_RANDOM_SIZE]; 1161 unsigned char client_random[SSL3_RANDOM_SIZE]; 1162 1163 SSL3_BUFFER_INTERNAL rbuf; /* read IO goes into here */ 1164 SSL3_BUFFER_INTERNAL wbuf; /* write IO goes into here */ 1165 1166 /* we allow one fatal and one warning alert to be outstanding, 1167 * send close alert via the warning alert */ 1168 int alert_dispatch; 1169 unsigned char send_alert[2]; 1170 1171 /* flags for countermeasure against known-IV weakness */ 1172 int need_empty_fragments; 1173 int empty_fragment_done; 1174 1175 SSL3_RECORD_INTERNAL rrec; /* each decoded record goes in here */ 1176 1177 /* storage for Alert/Handshake protocol data received but not 1178 * yet processed by ssl3_read_bytes: */ 1179 unsigned char alert_fragment[2]; 1180 unsigned int alert_fragment_len; 1181 unsigned char handshake_fragment[4]; 1182 unsigned int handshake_fragment_len; 1183 1184 /* partial write - check the numbers match */ 1185 unsigned int wnum; /* number of bytes sent so far */ 1186 int wpend_tot; /* number bytes written */ 1187 int wpend_type; 1188 int wpend_ret; /* number of bytes submitted */ 1189 const unsigned char *wpend_buf; 1190 1191 /* Transcript of handshake messages that have been sent and received. */ 1192 struct tls_buffer *handshake_transcript; 1193 1194 /* Rolling hash of handshake messages. */ 1195 EVP_MD_CTX *handshake_hash; 1196 1197 /* this is set whenerver we see a change_cipher_spec message 1198 * come in when we are not looking for one */ 1199 int change_cipher_spec; 1200 1201 int warn_alert; 1202 int fatal_alert; 1203 1204 /* This flag is set when we should renegotiate ASAP, basically when 1205 * there is no more data in the read or write buffers */ 1206 int renegotiate; 1207 int total_renegotiations; 1208 int num_renegotiations; 1209 1210 int in_read_app_data; 1211 1212 SSL_HANDSHAKE hs; 1213 1214 /* Connection binding to prevent renegotiation attacks */ 1215 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 1216 unsigned char previous_client_finished_len; 1217 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 1218 unsigned char previous_server_finished_len; 1219 int send_connection_binding; /* TODOEKR */ 1220 1221 /* Set if we saw a Renegotiation Indication extension from our peer. */ 1222 int renegotiate_seen; 1223 1224 /* 1225 * ALPN information. 1226 * 1227 * In a server these point to the selected ALPN protocol after the 1228 * ClientHello has been processed. In a client these contain the 1229 * protocol that the server selected once the ServerHello has been 1230 * processed. 1231 */ 1232 uint8_t *alpn_selected; 1233 size_t alpn_selected_len; 1234 1235 /* Contains the QUIC transport params received from our peer. */ 1236 uint8_t *peer_quic_transport_params; 1237 size_t peer_quic_transport_params_len; 1238 } SSL3_STATE; 1239 1240 /* 1241 * Flag values for enc_flags. 1242 */ 1243 1244 /* Uses signature algorithms extension. */ 1245 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 1246 1247 /* Uses SHA256 default PRF. */ 1248 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 1249 1250 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 1251 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 1252 1253 /* Allow TLS 1.3 ciphersuites only. */ 1254 #define SSL_ENC_FLAG_TLS1_3_CIPHERS (1 << 5) 1255 1256 #define TLSV1_ENC_FLAGS 0 1257 #define TLSV1_1_ENC_FLAGS 0 1258 #define TLSV1_2_ENC_FLAGS (SSL_ENC_FLAG_SIGALGS | \ 1259 SSL_ENC_FLAG_SHA256_PRF | \ 1260 SSL_ENC_FLAG_TLS1_2_CIPHERS) 1261 #define TLSV1_3_ENC_FLAGS (SSL_ENC_FLAG_SIGALGS | \ 1262 SSL_ENC_FLAG_TLS1_3_CIPHERS) 1263 1264 extern const SSL_CIPHER ssl3_ciphers[]; 1265 1266 const char *ssl_version_string(int ver); 1267 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t proto_ver, 1268 uint16_t max_tls_ver, uint16_t *out_tls_ver, uint16_t *out_proto_ver); 1269 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t proto_ver, 1270 uint16_t min_tls_ver, uint16_t *out_tls_ver, uint16_t *out_proto_ver); 1271 int ssl_enabled_tls_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1272 int ssl_supported_tls_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1273 uint16_t ssl_tls_version(uint16_t version); 1274 uint16_t ssl_effective_tls_version(SSL *s); 1275 int ssl_max_supported_version(SSL *s, uint16_t *max_ver); 1276 int ssl_max_legacy_version(SSL *s, uint16_t *max_ver); 1277 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); 1278 int ssl_check_version_from_server(SSL *s, uint16_t server_version); 1279 int ssl_legacy_stack_version(SSL *s, uint16_t version); 1280 int ssl_cipher_in_list(STACK_OF(SSL_CIPHER) *ciphers, const SSL_CIPHER *cipher); 1281 int ssl_cipher_allowed_in_tls_version_range(const SSL_CIPHER *cipher, 1282 uint16_t min_ver, uint16_t max_ver); 1283 1284 const SSL_METHOD *tls_legacy_method(void); 1285 const SSL_METHOD *ssl_get_method(uint16_t version); 1286 1287 void ssl_clear_cipher_state(SSL *s); 1288 int ssl_clear_bad_session(SSL *s); 1289 1290 void ssl_info_callback(const SSL *s, int type, int value); 1291 void ssl_msg_callback(SSL *s, int is_write, int content_type, 1292 const void *msg_buf, size_t msg_len); 1293 void ssl_msg_callback_cbs(SSL *s, int is_write, int content_type, CBS *cbs); 1294 1295 SSL_CERT *ssl_cert_new(void); 1296 SSL_CERT *ssl_cert_dup(SSL_CERT *cert); 1297 void ssl_cert_free(SSL_CERT *c); 1298 SSL_CERT *ssl_get0_cert(SSL_CTX *ctx, SSL *ssl); 1299 int ssl_cert_set0_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain); 1300 int ssl_cert_set1_chain(SSL_CTX *ctx, SSL *ssl, STACK_OF(X509) *chain); 1301 int ssl_cert_add0_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert); 1302 int ssl_cert_add1_chain_cert(SSL_CTX *ctx, SSL *ssl, X509 *cert); 1303 1304 int ssl_security_default_cb(const SSL *ssl, const SSL_CTX *ctx, int op, 1305 int bits, int nid, void *other, void *ex_data); 1306 1307 int ssl_security_cipher_check(const SSL *ssl, SSL_CIPHER *cipher); 1308 int ssl_security_shared_cipher(const SSL *ssl, SSL_CIPHER *cipher); 1309 int ssl_security_supported_cipher(const SSL *ssl, SSL_CIPHER *cipher); 1310 int ssl_ctx_security_dh(const SSL_CTX *ctx, DH *dh); 1311 int ssl_security_dh(const SSL *ssl, DH *dh); 1312 int ssl_security_sigalg_check(const SSL *ssl, const EVP_PKEY *pkey); 1313 int ssl_security_tickets(const SSL *ssl); 1314 int ssl_security_version(const SSL *ssl, int version); 1315 int ssl_security_cert(const SSL_CTX *ctx, const SSL *ssl, X509 *x509, 1316 int is_peer, int *out_error); 1317 int ssl_security_cert_chain(const SSL *ssl, STACK_OF(X509) *sk, 1318 X509 *x509, int *out_error); 1319 int ssl_security_shared_group(const SSL *ssl, uint16_t group_id); 1320 int ssl_security_supported_group(const SSL *ssl, uint16_t group_id); 1321 1322 int ssl_get_new_session(SSL *s, int session); 1323 int ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block, 1324 int *alert); 1325 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 1326 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, 1327 int num); 1328 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); 1329 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 1330 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 1331 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) *tls13, 1332 const char *rule_str, SSL_CERT *cert); 1333 int ssl_parse_ciphersuites(STACK_OF(SSL_CIPHER) **out_ciphers, const char *str); 1334 int ssl_merge_cipherlists(STACK_OF(SSL_CIPHER) *cipherlist, 1335 STACK_OF(SSL_CIPHER) *cipherlist_tls13, 1336 STACK_OF(SSL_CIPHER) **out_cipherlist); 1337 void ssl_update_cache(SSL *s, int mode); 1338 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 1339 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 1340 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 1341 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); 1342 1343 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 1344 int ssl_undefined_function(SSL *s); 1345 int ssl_undefined_void_function(void); 1346 int ssl_undefined_const_function(const SSL *s); 1347 SSL_CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 1348 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, 1349 const struct ssl_sigalg **sap); 1350 size_t ssl_dhe_params_auto_key_bits(SSL *s); 1351 int ssl_cert_type(EVP_PKEY *pkey); 1352 void ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher); 1353 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 1354 int ssl_has_ecc_ciphers(SSL *s); 1355 int ssl_verify_alarm_type(long type); 1356 1357 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); 1358 1359 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 1360 int ssl3_send_server_certificate(SSL *s); 1361 int ssl3_send_newsession_ticket(SSL *s); 1362 int ssl3_send_cert_status(SSL *s); 1363 int ssl3_get_finished(SSL *s, int state_a, int state_b); 1364 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 1365 int ssl3_do_write(SSL *s, int type); 1366 int ssl3_send_alert(SSL *s, int level, int desc); 1367 int ssl3_get_req_cert_types(SSL *s, CBB *cbb); 1368 int ssl3_get_message(SSL *s, int st1, int stn, int mt, long max); 1369 int ssl3_send_finished(SSL *s, int state_a, int state_b); 1370 int ssl3_num_ciphers(void); 1371 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 1372 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 1373 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 1374 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 1375 int ssl3_renegotiate(SSL *ssl); 1376 1377 int ssl3_renegotiate_check(SSL *ssl); 1378 1379 void ssl_force_want_read(SSL *s); 1380 1381 int ssl3_dispatch_alert(SSL *s); 1382 int ssl3_read_alert(SSL *s); 1383 int ssl3_read_change_cipher_spec(SSL *s); 1384 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1385 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 1386 int ssl3_output_cert_chain(SSL *s, CBB *cbb, SSL_CERT_PKEY *cpk); 1387 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 1388 STACK_OF(SSL_CIPHER) *srvr); 1389 int ssl3_setup_buffers(SSL *s); 1390 int ssl3_setup_init_buffer(SSL *s); 1391 void ssl3_release_init_buffer(SSL *s); 1392 int ssl3_setup_read_buffer(SSL *s); 1393 int ssl3_setup_write_buffer(SSL *s); 1394 void ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b); 1395 void ssl3_release_read_buffer(SSL *s); 1396 void ssl3_release_write_buffer(SSL *s); 1397 int ssl3_new(SSL *s); 1398 void ssl3_free(SSL *s); 1399 int ssl3_accept(SSL *s); 1400 int ssl3_connect(SSL *s); 1401 int ssl3_read(SSL *s, void *buf, int len); 1402 int ssl3_peek(SSL *s, void *buf, int len); 1403 int ssl3_write(SSL *s, const void *buf, int len); 1404 int ssl3_shutdown(SSL *s); 1405 void ssl3_clear(SSL *s); 1406 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 1407 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 1408 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 1409 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 1410 int ssl3_pending(const SSL *s); 1411 1412 int ssl3_handshake_msg_hdr_len(SSL *s); 1413 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, 1414 uint8_t msg_type); 1415 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); 1416 int ssl3_handshake_write(SSL *s); 1417 int ssl3_record_write(SSL *s, int type); 1418 1419 int ssl3_do_change_cipher_spec(SSL *ssl); 1420 1421 int ssl3_packet_read(SSL *s, int plen); 1422 int ssl3_packet_extend(SSL *s, int plen); 1423 int ssl_server_legacy_first_packet(SSL *s); 1424 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 1425 unsigned int len); 1426 1427 /* some client-only functions */ 1428 int ssl3_send_client_hello(SSL *s); 1429 int ssl3_get_dtls_hello_verify(SSL *s); 1430 int ssl3_get_server_hello(SSL *s); 1431 int ssl3_get_certificate_request(SSL *s); 1432 int ssl3_get_new_session_ticket(SSL *s); 1433 int ssl3_get_cert_status(SSL *s); 1434 int ssl3_get_server_done(SSL *s); 1435 int ssl3_send_client_verify(SSL *s); 1436 int ssl3_send_client_certificate(SSL *s); 1437 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 1438 int ssl3_send_client_key_exchange(SSL *s); 1439 int ssl3_get_server_key_exchange(SSL *s); 1440 int ssl3_get_server_certificate(SSL *s); 1441 int ssl3_check_cert_and_algorithm(SSL *s); 1442 int ssl3_check_finished(SSL *s); 1443 1444 /* some server-only functions */ 1445 int ssl3_get_client_hello(SSL *s); 1446 int ssl3_send_dtls_hello_verify_request(SSL *s); 1447 int ssl3_send_server_hello(SSL *s); 1448 int ssl3_send_hello_request(SSL *s); 1449 int ssl3_send_server_key_exchange(SSL *s); 1450 int ssl3_send_certificate_request(SSL *s); 1451 int ssl3_send_server_done(SSL *s); 1452 int ssl3_get_client_certificate(SSL *s); 1453 int ssl3_get_client_key_exchange(SSL *s); 1454 int ssl3_get_cert_verify(SSL *s); 1455 1456 int ssl_kex_generate_dhe(DH *dh, DH *dh_params); 1457 int ssl_kex_generate_dhe_params_auto(DH *dh, size_t key_len); 1458 int ssl_kex_params_dhe(DH *dh, CBB *cbb); 1459 int ssl_kex_public_dhe(DH *dh, CBB *cbb); 1460 int ssl_kex_peer_params_dhe(DH *dh, CBS *cbs, int *decode_error, 1461 int *invalid_params); 1462 int ssl_kex_peer_public_dhe(DH *dh, CBS *cbs, int *decode_error, 1463 int *invalid_key); 1464 int ssl_kex_derive_dhe(DH *dh, DH *dh_peer, 1465 uint8_t **shared_key, size_t *shared_key_len); 1466 1467 int ssl_kex_dummy_ecdhe_x25519(EVP_PKEY *pkey); 1468 int ssl_kex_generate_ecdhe_ecp(EC_KEY *ecdh, int nid); 1469 int ssl_kex_public_ecdhe_ecp(EC_KEY *ecdh, CBB *cbb); 1470 int ssl_kex_peer_public_ecdhe_ecp(EC_KEY *ecdh, int nid, CBS *cbs); 1471 int ssl_kex_derive_ecdhe_ecp(EC_KEY *ecdh, EC_KEY *ecdh_peer, 1472 uint8_t **shared_key, size_t *shared_key_len); 1473 1474 int tls1_new(SSL *s); 1475 void tls1_free(SSL *s); 1476 void tls1_clear(SSL *s); 1477 1478 int ssl_init_wbio_buffer(SSL *s, int push); 1479 void ssl_free_wbio_buffer(SSL *s); 1480 1481 int tls1_transcript_hash_init(SSL *s); 1482 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); 1483 int tls1_transcript_hash_value(SSL *s, unsigned char *out, size_t len, 1484 size_t *outlen); 1485 void tls1_transcript_hash_free(SSL *s); 1486 1487 int tls1_transcript_init(SSL *s); 1488 void tls1_transcript_free(SSL *s); 1489 void tls1_transcript_reset(SSL *s); 1490 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); 1491 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); 1492 void tls1_transcript_freeze(SSL *s); 1493 void tls1_transcript_unfreeze(SSL *s); 1494 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); 1495 1496 int tls1_PRF(SSL *s, const unsigned char *secret, size_t secret_len, 1497 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len, 1498 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len, 1499 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len); 1500 1501 void tls1_cleanup_key_block(SSL *s); 1502 int tls1_change_read_cipher_state(SSL *s); 1503 int tls1_change_write_cipher_state(SSL *s); 1504 int tls1_setup_key_block(SSL *s); 1505 int tls1_generate_key_block(SSL *s, uint8_t *key_block, size_t key_block_len); 1506 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1507 const char *label, size_t llen, const unsigned char *p, size_t plen, 1508 int use_context); 1509 int ssl_ok(SSL *s); 1510 1511 int tls12_derive_finished(SSL *s); 1512 int tls12_derive_peer_finished(SSL *s); 1513 int tls12_derive_master_secret(SSL *s, uint8_t *premaster_secret, 1514 size_t premaster_secret_len); 1515 1516 int ssl_using_ecc_cipher(SSL *s); 1517 int ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x); 1518 1519 void tls1_get_formatlist(const SSL *s, int client_formats, 1520 const uint8_t **pformats, size_t *pformatslen); 1521 void tls1_get_group_list(const SSL *s, int client_groups, 1522 const uint16_t **pgroups, size_t *pgroupslen); 1523 1524 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, 1525 const int *groups, size_t ngroups); 1526 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, 1527 const char *groups); 1528 1529 int tls1_ec_group_id2nid(uint16_t group_id, int *out_nid); 1530 int tls1_ec_group_id2bits(uint16_t group_id, int *out_bits); 1531 int tls1_ec_nid2group_id(int nid, uint16_t *out_group_id); 1532 int tls1_check_group(SSL *s, uint16_t group_id); 1533 int tls1_count_shared_groups(const SSL *ssl, size_t *out_count); 1534 int tls1_get_shared_group_by_index(const SSL *ssl, size_t index, int *out_nid); 1535 int tls1_get_supported_group(const SSL *s, int *out_nid); 1536 1537 int ssl_check_clienthello_tlsext_early(SSL *s); 1538 int ssl_check_clienthello_tlsext_late(SSL *s); 1539 int ssl_check_serverhello_tlsext(SSL *s); 1540 1541 #define TLS1_TICKET_FATAL_ERROR -1 1542 #define TLS1_TICKET_NONE 0 1543 #define TLS1_TICKET_EMPTY 1 1544 #define TLS1_TICKET_NOT_DECRYPTED 2 1545 #define TLS1_TICKET_DECRYPTED 3 1546 1547 int tls1_process_ticket(SSL *s, CBS *ext_block, int *alert, SSL_SESSION **ret); 1548 1549 int tls1_check_ec_server_key(SSL *s); 1550 1551 /* s3_cbc.c */ 1552 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD_INTERNAL *rec, 1553 unsigned int md_size, unsigned int orig_len); 1554 int ssl3_cbc_remove_padding(SSL3_RECORD_INTERNAL *rec, unsigned int eiv_len, 1555 unsigned int mac_size); 1556 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 1557 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 1558 size_t *md_out_size, const unsigned char header[13], 1559 const unsigned char *data, size_t data_plus_mac_size, 1560 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 1561 unsigned int mac_secret_length); 1562 int SSL_state_func_code(int _state); 1563 1564 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) 1565 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) 1566 void SSL_error_internal(const SSL *s, int r, char *f, int l); 1567 1568 #ifndef OPENSSL_NO_SRTP 1569 1570 int srtp_find_profile_by_name(const char *profile_name, 1571 const SRTP_PROTECTION_PROFILE **pptr, unsigned int len); 1572 int srtp_find_profile_by_num(unsigned int profile_num, 1573 const SRTP_PROTECTION_PROFILE **pptr); 1574 1575 #endif /* OPENSSL_NO_SRTP */ 1576 1577 int tls_process_peer_certs(SSL *s, STACK_OF(X509) *peer_certs); 1578 1579 __END_HIDDEN_DECLS 1580 1581 #endif 1582