1 /* $OpenBSD: ssl_locl.h,v 1.272 2020/04/18 14:07:56 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 #include <openssl/bio.h> 156 #include <openssl/buffer.h> 157 #include <openssl/dsa.h> 158 #include <openssl/err.h> 159 #include <openssl/rsa.h> 160 #include <openssl/ssl.h> 161 #include <openssl/stack.h> 162 163 #include "bytestring.h" 164 #include "ssl_sigalgs.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_TLS1_3_CLIENT 173 #define LIBRESSL_HAS_TLS1_3_CLIENT 174 #endif 175 176 #if defined(LIBRESSL_HAS_TLS1_3_CLIENT) || defined(LIBRESSL_HAS_TLS1_3_SERVER) 177 #define LIBRESSL_HAS_TLS1_3 178 #endif 179 180 /* LOCAL STUFF */ 181 182 #define SSL_DECRYPT 0 183 #define SSL_ENCRYPT 1 184 185 /* 186 * Define the Bitmasks for SSL_CIPHER.algorithms. 187 * This bits are used packed as dense as possible. If new methods/ciphers 188 * etc will be added, the bits a likely to change, so this information 189 * is for internal library use only, even though SSL_CIPHER.algorithms 190 * can be publicly accessed. 191 * Use the according functions for cipher management instead. 192 * 193 * The bit mask handling in the selection and sorting scheme in 194 * ssl_create_cipher_list() has only limited capabilities, reflecting 195 * that the different entities within are mutually exclusive: 196 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 197 */ 198 199 /* Bits for algorithm_mkey (key exchange algorithm) */ 200 #define SSL_kRSA 0x00000001L /* RSA key exchange */ 201 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ 202 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ 203 #define SSL_kGOST 0x00000200L /* GOST key exchange */ 204 #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */ 205 206 /* Bits for algorithm_auth (server authentication) */ 207 #define SSL_aRSA 0x00000001L /* RSA auth */ 208 #define SSL_aDSS 0x00000002L /* DSS auth */ 209 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ 210 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ 211 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ 212 #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */ 213 214 /* Bits for algorithm_enc (symmetric encryption) */ 215 #define SSL_DES 0x00000001L 216 #define SSL_3DES 0x00000002L 217 #define SSL_RC4 0x00000004L 218 #define SSL_IDEA 0x00000008L 219 #define SSL_eNULL 0x00000010L 220 #define SSL_AES128 0x00000020L 221 #define SSL_AES256 0x00000040L 222 #define SSL_CAMELLIA128 0x00000080L 223 #define SSL_CAMELLIA256 0x00000100L 224 #define SSL_eGOST2814789CNT 0x00000200L 225 #define SSL_AES128GCM 0x00000400L 226 #define SSL_AES256GCM 0x00000800L 227 #define SSL_CHACHA20POLY1305 0x00001000L 228 229 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) 230 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 231 232 233 /* Bits for algorithm_mac (symmetric authentication) */ 234 235 #define SSL_MD5 0x00000001L 236 #define SSL_SHA1 0x00000002L 237 #define SSL_GOST94 0x00000004L 238 #define SSL_GOST89MAC 0x00000008L 239 #define SSL_SHA256 0x00000010L 240 #define SSL_SHA384 0x00000020L 241 /* Not a real MAC, just an indication it is part of cipher */ 242 #define SSL_AEAD 0x00000040L 243 #define SSL_STREEBOG256 0x00000080L 244 245 /* Bits for algorithm_ssl (protocol version) */ 246 #define SSL_SSLV3 0x00000002L 247 #define SSL_TLSV1 SSL_SSLV3 /* for now */ 248 #define SSL_TLSV1_2 0x00000004L 249 #define SSL_TLSV1_3 0x00000008L 250 251 252 /* Bits for algorithm2 (handshake digests and other extra flags) */ 253 254 #define SSL_HANDSHAKE_MAC_MASK 0xff0 255 #define SSL_HANDSHAKE_MAC_MD5 0x010 256 #define SSL_HANDSHAKE_MAC_SHA 0x020 257 #define SSL_HANDSHAKE_MAC_GOST94 0x040 258 #define SSL_HANDSHAKE_MAC_SHA256 0x080 259 #define SSL_HANDSHAKE_MAC_SHA384 0x100 260 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 261 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) 262 263 #define SSL3_CK_ID 0x03000000 264 #define SSL3_CK_VALUE_MASK 0x0000ffff 265 266 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) 267 268 #define TLS1_PRF_DGST_SHIFT 10 269 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) 270 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) 271 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) 272 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) 273 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) 274 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) 275 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) 276 277 /* 278 * Stream MAC for GOST ciphersuites from cryptopro draft 279 * (currently this also goes into algorithm2). 280 */ 281 #define TLS1_STREAM_MAC 0x04 282 283 /* 284 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that 285 * indicates that the variable part of the nonce is included as a prefix of 286 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) 287 */ 288 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) 289 290 /* 291 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce 292 * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD. 293 */ 294 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ 295 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) 296 297 /* 298 * Cipher strength information. 299 */ 300 #define SSL_STRONG_MASK 0x000001fcL 301 #define SSL_STRONG_NONE 0x00000004L 302 #define SSL_LOW 0x00000020L 303 #define SSL_MEDIUM 0x00000040L 304 #define SSL_HIGH 0x00000080L 305 306 /* 307 * The keylength (measured in RSA key bits, I guess) for temporary keys. 308 * Cipher argument is so that this can be variable in the future. 309 */ 310 #define SSL_C_PKEYLENGTH(c) 1024 311 312 /* Check if an SSL structure is using DTLS. */ 313 #define SSL_IS_DTLS(s) \ 314 (s->method->internal->version == DTLS1_VERSION) 315 316 /* See if we need explicit IV. */ 317 #define SSL_USE_EXPLICIT_IV(s) \ 318 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 319 320 /* See if we use signature algorithms extension. */ 321 #define SSL_USE_SIGALGS(s) \ 322 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 323 324 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 325 #define SSL_USE_TLS1_2_CIPHERS(s) \ 326 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 327 328 /* Allow TLS 1.3 ciphersuites only. */ 329 #define SSL_USE_TLS1_3_CIPHERS(s) \ 330 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_3_CIPHERS) 331 332 #define SSL_PKEY_RSA_ENC 0 333 #define SSL_PKEY_RSA_SIGN 1 334 #define SSL_PKEY_DH_RSA 2 335 #define SSL_PKEY_ECC 3 336 #define SSL_PKEY_GOST01 4 337 #define SSL_PKEY_NUM 5 338 339 #define SSL_MAX_EMPTY_RECORDS 32 340 341 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | 342 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) 343 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 344 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 345 * SSL_aRSA <- RSA_ENC | RSA_SIGN 346 * SSL_aDSS <- DSA_SIGN 347 */ 348 349 /* 350 #define CERT_INVALID 0 351 #define CERT_PUBLIC_KEY 1 352 #define CERT_PRIVATE_KEY 2 353 */ 354 355 /* From ECC-TLS draft, used in encoding the curve type in 356 * ECParameters 357 */ 358 #define EXPLICIT_PRIME_CURVE_TYPE 1 359 #define EXPLICIT_CHAR2_CURVE_TYPE 2 360 #define NAMED_CURVE_TYPE 3 361 362 typedef struct ssl_method_internal_st { 363 int version; 364 365 uint16_t min_version; 366 uint16_t max_version; 367 368 int (*ssl_new)(SSL *s); 369 void (*ssl_clear)(SSL *s); 370 void (*ssl_free)(SSL *s); 371 372 int (*ssl_accept)(SSL *s); 373 int (*ssl_connect)(SSL *s); 374 int (*ssl_shutdown)(SSL *s); 375 376 int (*ssl_renegotiate)(SSL *s); 377 int (*ssl_renegotiate_check)(SSL *s); 378 379 int (*ssl_pending)(const SSL *s); 380 int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, int len, 381 int peek); 382 int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len); 383 384 const struct ssl_method_st *(*get_ssl_method)(int version); 385 386 long (*get_timeout)(void); 387 int (*ssl_version)(void); 388 389 struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 390 } SSL_METHOD_INTERNAL; 391 392 typedef struct ssl_session_internal_st { 393 CRYPTO_EX_DATA ex_data; /* application specific data */ 394 395 /* These are used to make removal of session-ids more 396 * efficient and to implement a maximum cache size. */ 397 struct ssl_session_st *prev, *next; 398 399 /* Used to indicate that session resumption is not allowed. 400 * Applications can also set this bit for a new session via 401 * not_resumable_session_cb to disable session caching and tickets. */ 402 int not_resumable; 403 404 /* The cert is the certificate used to establish this connection */ 405 struct sess_cert_st /* SESS_CERT */ *sess_cert; 406 407 size_t tlsext_ecpointformatlist_length; 408 uint8_t *tlsext_ecpointformatlist; /* peer's list */ 409 size_t tlsext_supportedgroups_length; 410 uint16_t *tlsext_supportedgroups; /* peer's list */ 411 } SSL_SESSION_INTERNAL; 412 #define SSI(s) (s->session->internal) 413 414 typedef struct ssl_handshake_st { 415 /* state contains one of the SSL3_ST_* values. */ 416 int state; 417 418 /* used when SSL_ST_FLUSH_DATA is entered */ 419 int next_state; 420 421 /* new_cipher is the cipher being negotiated in this handshake. */ 422 const SSL_CIPHER *new_cipher; 423 424 /* key_block is the record-layer key block for TLS 1.2 and earlier. */ 425 int key_block_len; 426 unsigned char *key_block; 427 428 /* Extensions seen in this handshake. */ 429 uint32_t extensions_seen; 430 431 /* sigalgs offered in this handshake in wire form */ 432 size_t sigalgs_len; 433 uint8_t *sigalgs; 434 } SSL_HANDSHAKE; 435 436 typedef struct ssl_handshake_tls13_st { 437 uint16_t min_version; 438 uint16_t max_version; 439 uint16_t version; 440 441 int use_legacy; 442 int hrr; 443 444 /* Version proposed by peer server. */ 445 uint16_t server_version; 446 447 uint16_t server_group; 448 struct tls13_key_share *key_share; 449 struct tls13_secrets *secrets; 450 451 uint8_t *cookie; 452 size_t cookie_len; 453 454 /* Preserved transcript hash. */ 455 uint8_t transcript_hash[EVP_MAX_MD_SIZE]; 456 size_t transcript_hash_len; 457 458 /* Legacy session ID. */ 459 uint8_t legacy_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 460 size_t legacy_session_id_len; 461 } SSL_HANDSHAKE_TLS13; 462 463 typedef struct ssl_ctx_internal_st { 464 uint16_t min_version; 465 uint16_t max_version; 466 467 unsigned long options; 468 unsigned long mode; 469 470 /* If this callback is not null, it will be called each 471 * time a session id is added to the cache. If this function 472 * returns 1, it means that the callback will do a 473 * SSL_SESSION_free() when it has finished using it. Otherwise, 474 * on 0, it means the callback has finished with it. 475 * If remove_session_cb is not null, it will be called when 476 * a session-id is removed from the cache. After the call, 477 * OpenSSL will SSL_SESSION_free() it. */ 478 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess); 479 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess); 480 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, 481 const unsigned char *data, int len, int *copy); 482 483 /* if defined, these override the X509_verify_cert() calls */ 484 int (*app_verify_callback)(X509_STORE_CTX *, void *); 485 void *app_verify_arg; 486 487 /* get client cert callback */ 488 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey); 489 490 /* cookie generate callback */ 491 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 492 unsigned int *cookie_len); 493 494 /* verify cookie callback */ 495 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie, 496 unsigned int cookie_len); 497 498 void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */ 499 500 /* callback that allows applications to peek at protocol messages */ 501 void (*msg_callback)(int write_p, int version, int content_type, 502 const void *buf, size_t len, SSL *ssl, void *arg); 503 void *msg_callback_arg; 504 505 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ 506 507 /* Default generate session ID callback. */ 508 GEN_SESSION_CB generate_session_id; 509 510 /* TLS extensions servername callback */ 511 int (*tlsext_servername_callback)(SSL*, int *, void *); 512 void *tlsext_servername_arg; 513 514 /* Callback to support customisation of ticket key setting */ 515 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name, 516 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 517 518 /* certificate status request info */ 519 /* Callback for status request */ 520 int (*tlsext_status_cb)(SSL *ssl, void *arg); 521 void *tlsext_status_arg; 522 523 struct lhash_st_SSL_SESSION *sessions; 524 525 /* Most session-ids that will be cached, default is 526 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ 527 unsigned long session_cache_size; 528 struct ssl_session_st *session_cache_head; 529 struct ssl_session_st *session_cache_tail; 530 531 /* This can have one of 2 values, ored together, 532 * SSL_SESS_CACHE_CLIENT, 533 * SSL_SESS_CACHE_SERVER, 534 * Default is SSL_SESSION_CACHE_SERVER, which means only 535 * SSL_accept which cache SSL_SESSIONS. */ 536 int session_cache_mode; 537 538 struct { 539 int sess_connect; /* SSL new conn - started */ 540 int sess_connect_renegotiate;/* SSL reneg - requested */ 541 int sess_connect_good; /* SSL new conne/reneg - finished */ 542 int sess_accept; /* SSL new accept - started */ 543 int sess_accept_renegotiate;/* SSL reneg - requested */ 544 int sess_accept_good; /* SSL accept/reneg - finished */ 545 int sess_miss; /* session lookup misses */ 546 int sess_timeout; /* reuse attempt on timeouted session */ 547 int sess_cache_full; /* session removed due to full cache */ 548 int sess_hit; /* session reuse actually done */ 549 int sess_cb_hit; /* session-id that was not 550 * in the cache was 551 * passed back via the callback. This 552 * indicates that the application is 553 * supplying session-id's from other 554 * processes - spooky :-) */ 555 } stats; 556 557 CRYPTO_EX_DATA ex_data; 558 559 /* same cipher_list but sorted for lookup */ 560 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 561 562 struct cert_st /* CERT */ *cert; 563 564 /* Default values used when no per-SSL value is defined follow */ 565 566 /* what we put in client cert requests */ 567 STACK_OF(X509_NAME) *client_CA; 568 569 long max_cert_list; 570 571 int read_ahead; 572 573 int quiet_shutdown; 574 575 /* Maximum amount of data to send in one fragment. 576 * actual record size can be more than this due to 577 * padding and MAC overheads. 578 */ 579 unsigned int max_send_fragment; 580 581 #ifndef OPENSSL_NO_ENGINE 582 /* Engine to pass requests for client certs to 583 */ 584 ENGINE *client_cert_engine; 585 #endif 586 587 /* RFC 4507 session ticket keys */ 588 unsigned char tlsext_tick_key_name[16]; 589 unsigned char tlsext_tick_hmac_key[16]; 590 unsigned char tlsext_tick_aes_key[16]; 591 592 /* SRTP profiles we are willing to do from RFC 5764 */ 593 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 594 595 /* 596 * ALPN information. 597 */ 598 599 /* 600 * Server callback function that allows the server to select the 601 * protocol for the connection. 602 * out: on successful return, this must point to the raw protocol 603 * name (without the length prefix). 604 * outlen: on successful return, this contains the length of out. 605 * in: points to the client's list of supported protocols in 606 * wire-format. 607 * inlen: the length of in. 608 */ 609 int (*alpn_select_cb)(SSL *s, const unsigned char **out, 610 unsigned char *outlen, const unsigned char *in, unsigned int inlen, 611 void *arg); 612 void *alpn_select_cb_arg; 613 614 /* Client list of supported protocols in wire format. */ 615 unsigned char *alpn_client_proto_list; 616 unsigned int alpn_client_proto_list_len; 617 618 size_t tlsext_ecpointformatlist_length; 619 uint8_t *tlsext_ecpointformatlist; /* our list */ 620 size_t tlsext_supportedgroups_length; 621 uint16_t *tlsext_supportedgroups; /* our list */ 622 } SSL_CTX_INTERNAL; 623 624 typedef struct ssl_internal_st { 625 struct tls13_ctx *tls13; 626 627 uint16_t min_version; 628 uint16_t max_version; 629 630 unsigned long options; /* protocol behaviour */ 631 unsigned long mode; /* API behaviour */ 632 633 /* Client list of supported protocols in wire format. */ 634 unsigned char *alpn_client_proto_list; 635 unsigned int alpn_client_proto_list_len; 636 637 /* XXX Callbacks */ 638 639 /* true when we are actually in SSL_accept() or SSL_connect() */ 640 int in_handshake; 641 int (*handshake_func)(SSL *); 642 /* callback that allows applications to peek at protocol messages */ 643 void (*msg_callback)(int write_p, int version, int content_type, 644 const void *buf, size_t len, SSL *ssl, void *arg); 645 void *msg_callback_arg; 646 647 /* Default generate session ID callback. */ 648 GEN_SESSION_CB generate_session_id; 649 650 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ 651 652 void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */ 653 654 /* TLS extension debug callback */ 655 void (*tlsext_debug_cb)(SSL *s, int client_server, int type, 656 unsigned char *data, int len, void *arg); 657 void *tlsext_debug_arg; 658 659 /* TLS Session Ticket extension callback */ 660 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; 661 void *tls_session_ticket_ext_cb_arg; 662 663 /* TLS pre-shared secret session resumption */ 664 tls_session_secret_cb_fn tls_session_secret_cb; 665 void *tls_session_secret_cb_arg; 666 667 /* XXX non-callback */ 668 669 int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */ 670 671 /* This holds a variable that indicates what we were doing 672 * when a 0 or -1 is returned. This is needed for 673 * non-blocking IO so we know what request needs re-doing when 674 * in SSL_accept or SSL_connect */ 675 int rwstate; 676 677 /* Imagine that here's a boolean member "init" that is 678 * switched as soon as SSL_set_{accept/connect}_state 679 * is called for the first time, so that "state" and 680 * "handshake_func" are properly initialized. But as 681 * handshake_func is == 0 until then, we use this 682 * test instead of an "init" member. 683 */ 684 685 int new_session;/* Generate a new session or reuse an old one. 686 * NB: For servers, the 'new' session may actually be a previously 687 * cached session or even the previous session unless 688 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */ 689 int quiet_shutdown;/* don't send shutdown packets */ 690 int shutdown; /* we have shut things down, 0x01 sent, 0x02 691 * for received */ 692 BUF_MEM *init_buf; /* buffer used during init */ 693 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ 694 int init_num; /* amount read/written */ 695 int init_off; /* amount read/written */ 696 697 /* used internally to point at a raw packet */ 698 unsigned char *packet; 699 unsigned int packet_length; 700 701 int read_ahead; /* Read as many input bytes as possible 702 * (for non-blocking reads) */ 703 704 int hit; /* reusing a previous session */ 705 706 /* crypto */ 707 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 708 709 /* These are the ones being used, the ones in SSL_SESSION are 710 * the ones to be 'copied' into these ones */ 711 int mac_flags; 712 713 SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then 714 enc_read_ctx and read_hash are 715 ignored. */ 716 717 SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then 718 enc_write_ctx and write_hash are 719 ignored. */ 720 721 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 722 EVP_MD_CTX *write_hash; /* used for mac generation */ 723 724 /* session info */ 725 726 /* extra application data */ 727 CRYPTO_EX_DATA ex_data; 728 729 /* client cert? */ 730 /* for server side, keep the list of CA_dn we can use */ 731 STACK_OF(X509_NAME) *client_CA; 732 733 /* set this flag to 1 and a sleep(1) is put into all SSL_read() 734 * and SSL_write() calls, good for nbio debuging :-) */ 735 int debug; 736 long max_cert_list; 737 int first_packet; 738 739 int servername_done; /* no further mod of servername 740 0 : call the servername extension callback. 741 1 : prepare 2, allow last ack just after in server callback. 742 2 : don't call servername callback, no ack in server hello 743 */ 744 745 /* Expect OCSP CertificateStatus message */ 746 int tlsext_status_expected; 747 /* OCSP status request only */ 748 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; 749 X509_EXTENSIONS *tlsext_ocsp_exts; 750 /* OCSP response received or to be sent */ 751 unsigned char *tlsext_ocsp_resp; 752 int tlsext_ocsp_resplen; 753 754 /* RFC4507 session ticket expected to be received or sent */ 755 int tlsext_ticket_expected; 756 757 size_t tlsext_ecpointformatlist_length; 758 uint8_t *tlsext_ecpointformatlist; /* our list */ 759 size_t tlsext_supportedgroups_length; 760 uint16_t *tlsext_supportedgroups; /* our list */ 761 762 /* TLS Session Ticket extension override */ 763 TLS_SESSION_TICKET_EXT *tlsext_session_ticket; 764 765 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ 766 SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ 767 768 int renegotiate;/* 1 if we are renegotiating. 769 * 2 if we are a server and are inside a handshake 770 * (i.e. not just sending a HelloRequest) */ 771 772 int rstate; /* where we are when reading */ 773 774 int mac_packet; 775 776 int empty_record_count; 777 } SSL_INTERNAL; 778 779 typedef struct ssl3_record_internal_st { 780 int type; /* type of record */ 781 unsigned int length; /* How many bytes available */ 782 unsigned int padding_length; /* Number of padding bytes. */ 783 unsigned int off; /* read/write offset into 'buf' */ 784 unsigned char *data; /* pointer to the record data */ 785 unsigned char *input; /* where the decode bytes are */ 786 unsigned long epoch; /* epoch number, needed by DTLS1 */ 787 unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 788 } SSL3_RECORD_INTERNAL; 789 790 typedef struct ssl3_buffer_internal_st { 791 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 792 * see ssl3_setup_buffers() */ 793 size_t len; /* buffer size */ 794 int offset; /* where to 'copy from' */ 795 int left; /* how many bytes left */ 796 } SSL3_BUFFER_INTERNAL; 797 798 typedef struct ssl3_state_internal_st { 799 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 800 int read_mac_secret_size; 801 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 802 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 803 int write_mac_secret_size; 804 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 805 806 SSL3_BUFFER_INTERNAL rbuf; /* read IO goes into here */ 807 SSL3_BUFFER_INTERNAL wbuf; /* write IO goes into here */ 808 809 /* we allow one fatal and one warning alert to be outstanding, 810 * send close alert via the warning alert */ 811 int alert_dispatch; 812 unsigned char send_alert[2]; 813 814 /* flags for countermeasure against known-IV weakness */ 815 int need_empty_fragments; 816 int empty_fragment_done; 817 818 SSL3_RECORD_INTERNAL rrec; /* each decoded record goes in here */ 819 SSL3_RECORD_INTERNAL wrec; /* goes out from here */ 820 821 /* storage for Alert/Handshake protocol data received but not 822 * yet processed by ssl3_read_bytes: */ 823 unsigned char alert_fragment[2]; 824 unsigned int alert_fragment_len; 825 unsigned char handshake_fragment[4]; 826 unsigned int handshake_fragment_len; 827 828 /* partial write - check the numbers match */ 829 unsigned int wnum; /* number of bytes sent so far */ 830 int wpend_tot; /* number bytes written */ 831 int wpend_type; 832 int wpend_ret; /* number of bytes submitted */ 833 const unsigned char *wpend_buf; 834 835 /* Transcript of handshake messages that have been sent and received. */ 836 BUF_MEM *handshake_transcript; 837 838 /* Rolling hash of handshake messages. */ 839 EVP_MD_CTX *handshake_hash; 840 841 /* this is set whenerver we see a change_cipher_spec message 842 * come in when we are not looking for one */ 843 int change_cipher_spec; 844 845 int warn_alert; 846 int fatal_alert; 847 848 /* This flag is set when we should renegotiate ASAP, basically when 849 * there is no more data in the read or write buffers */ 850 int renegotiate; 851 int total_renegotiations; 852 int num_renegotiations; 853 854 int in_read_app_data; 855 856 SSL_HANDSHAKE hs; 857 SSL_HANDSHAKE_TLS13 hs_tls13; 858 859 struct { 860 int new_mac_secret_size; 861 862 /* actually only needs to be 16+20 */ 863 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 864 865 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 866 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 867 int finish_md_len; 868 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 869 int peer_finish_md_len; 870 871 unsigned long message_size; 872 int message_type; 873 874 DH *dh; 875 876 EC_KEY *ecdh; /* holds short lived ECDH key */ 877 int ecdh_nid; 878 879 uint8_t *x25519; 880 881 int reuse_message; 882 883 /* used for certificate requests */ 884 int cert_req; 885 int ctype_num; 886 char ctype[SSL3_CT_NUMBER]; 887 STACK_OF(X509_NAME) *ca_names; 888 889 const EVP_CIPHER *new_sym_enc; 890 const EVP_AEAD *new_aead; 891 const EVP_MD *new_hash; 892 int new_mac_pkey_type; 893 int cert_request; 894 } tmp; 895 896 /* Connection binding to prevent renegotiation attacks */ 897 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 898 unsigned char previous_client_finished_len; 899 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 900 unsigned char previous_server_finished_len; 901 int send_connection_binding; /* TODOEKR */ 902 903 /* Set if we saw a Renegotiation Indication extension from our peer. */ 904 int renegotiate_seen; 905 906 /* 907 * ALPN information. 908 * 909 * In a server these point to the selected ALPN protocol after the 910 * ClientHello has been processed. In a client these contain the 911 * protocol that the server selected once the ServerHello has been 912 * processed. 913 */ 914 unsigned char *alpn_selected; 915 size_t alpn_selected_len; 916 } SSL3_STATE_INTERNAL; 917 #define S3I(s) (s->s3->internal) 918 919 typedef struct dtls1_record_data_internal_st { 920 unsigned char *packet; 921 unsigned int packet_length; 922 SSL3_BUFFER_INTERNAL rbuf; 923 SSL3_RECORD_INTERNAL rrec; 924 } DTLS1_RECORD_DATA_INTERNAL; 925 926 typedef struct dtls1_state_internal_st { 927 unsigned int send_cookie; 928 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 929 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; 930 unsigned int cookie_len; 931 932 /* 933 * The current data and handshake epoch. This is initially 934 * undefined, and starts at zero once the initial handshake is 935 * completed 936 */ 937 unsigned short r_epoch; 938 unsigned short w_epoch; 939 940 /* records being received in the current epoch */ 941 DTLS1_BITMAP bitmap; 942 943 /* renegotiation starts a new set of sequence numbers */ 944 DTLS1_BITMAP next_bitmap; 945 946 /* handshake message numbers */ 947 unsigned short handshake_write_seq; 948 unsigned short next_handshake_write_seq; 949 950 unsigned short handshake_read_seq; 951 952 /* save last sequence number for retransmissions */ 953 unsigned char last_write_sequence[8]; 954 955 /* Received handshake records (processed and unprocessed) */ 956 record_pqueue unprocessed_rcds; 957 record_pqueue processed_rcds; 958 959 /* Buffered handshake messages */ 960 struct _pqueue *buffered_messages; 961 962 /* Buffered application records. 963 * Only for records between CCS and Finished 964 * to prevent either protocol violation or 965 * unnecessary message loss. 966 */ 967 record_pqueue buffered_app_data; 968 969 /* Is set when listening for new connections with dtls1_listen() */ 970 unsigned int listen; 971 972 unsigned int mtu; /* max DTLS packet size */ 973 974 struct hm_header_st w_msg_hdr; 975 struct hm_header_st r_msg_hdr; 976 977 struct dtls1_timeout_st timeout; 978 979 /* storage for Alert/Handshake protocol data received but not 980 * yet processed by ssl3_read_bytes: */ 981 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; 982 unsigned int alert_fragment_len; 983 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; 984 unsigned int handshake_fragment_len; 985 986 unsigned int retransmitting; 987 unsigned int change_cipher_spec_ok; 988 } DTLS1_STATE_INTERNAL; 989 #define D1I(s) (s->d1->internal) 990 991 typedef struct cert_pkey_st { 992 X509 *x509; 993 EVP_PKEY *privatekey; 994 STACK_OF(X509) *chain; 995 } CERT_PKEY; 996 997 typedef struct cert_st { 998 /* Current active set */ 999 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array 1000 * Probably it would make more sense to store 1001 * an index, not a pointer. */ 1002 1003 /* The following masks are for the key and auth 1004 * algorithms that are supported by the certs below */ 1005 int valid; 1006 unsigned long mask_k; 1007 unsigned long mask_a; 1008 1009 DH *dh_tmp; 1010 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); 1011 int dh_tmp_auto; 1012 1013 CERT_PKEY pkeys[SSL_PKEY_NUM]; 1014 1015 int references; /* >1 only if SSL_copy_session_id is used */ 1016 } CERT; 1017 1018 1019 typedef struct sess_cert_st { 1020 STACK_OF(X509) *cert_chain; /* as received from peer */ 1021 1022 /* The 'peer_...' members are used only by clients. */ 1023 int peer_cert_type; 1024 1025 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ 1026 CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; 1027 /* Obviously we don't have the private keys of these, 1028 * so maybe we shouldn't even use the CERT_PKEY type here. */ 1029 1030 int peer_nid; 1031 DH *peer_dh_tmp; 1032 EC_KEY *peer_ecdh_tmp; 1033 uint8_t *peer_x25519_tmp; 1034 1035 int references; /* actually always 1 at the moment */ 1036 } SESS_CERT; 1037 1038 /*#define SSL_DEBUG */ 1039 /*#define RSA_DEBUG */ 1040 1041 typedef struct ssl3_enc_method { 1042 unsigned int enc_flags; 1043 } SSL3_ENC_METHOD; 1044 1045 /* 1046 * Flag values for enc_flags. 1047 */ 1048 1049 /* Uses explicit IV. */ 1050 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) 1051 1052 /* Uses signature algorithms extension. */ 1053 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 1054 1055 /* Uses SHA256 default PRF. */ 1056 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 1057 1058 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 1059 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 1060 1061 /* Allow TLS 1.3 ciphersuites only. */ 1062 #define SSL_ENC_FLAG_TLS1_3_CIPHERS (1 << 5) 1063 1064 /* 1065 * ssl_aead_ctx_st contains information about an AEAD that is being used to 1066 * encrypt an SSL connection. 1067 */ 1068 struct ssl_aead_ctx_st { 1069 EVP_AEAD_CTX ctx; 1070 /* 1071 * fixed_nonce contains any bytes of the nonce that are fixed for all 1072 * records. 1073 */ 1074 unsigned char fixed_nonce[12]; 1075 unsigned char fixed_nonce_len; 1076 unsigned char variable_nonce_len; 1077 unsigned char xor_fixed_nonce; 1078 unsigned char tag_len; 1079 /* 1080 * variable_nonce_in_record is non-zero if the variable nonce 1081 * for a record is included as a prefix before the ciphertext. 1082 */ 1083 char variable_nonce_in_record; 1084 }; 1085 1086 extern SSL_CIPHER ssl3_ciphers[]; 1087 1088 const char *ssl_version_string(int ver); 1089 int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1090 int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1091 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); 1092 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver, 1093 uint16_t *out_ver); 1094 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver, 1095 uint16_t *out_ver); 1096 uint16_t ssl_max_server_version(SSL *s); 1097 int ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver, 1098 uint16_t max_ver); 1099 1100 const SSL_METHOD *tls_legacy_client_method(void); 1101 const SSL_METHOD *tls_legacy_server_method(void); 1102 1103 const SSL_METHOD *dtls1_get_client_method(int ver); 1104 const SSL_METHOD *dtls1_get_server_method(int ver); 1105 const SSL_METHOD *tls1_get_client_method(int ver); 1106 const SSL_METHOD *tls1_get_server_method(int ver); 1107 1108 extern SSL3_ENC_METHOD DTLSv1_enc_data; 1109 extern SSL3_ENC_METHOD TLSv1_enc_data; 1110 extern SSL3_ENC_METHOD TLSv1_1_enc_data; 1111 extern SSL3_ENC_METHOD TLSv1_2_enc_data; 1112 extern SSL3_ENC_METHOD TLSv1_3_enc_data; 1113 1114 void ssl_clear_cipher_state(SSL *s); 1115 void ssl_clear_cipher_read_state(SSL *s); 1116 void ssl_clear_cipher_write_state(SSL *s); 1117 int ssl_clear_bad_session(SSL *s); 1118 1119 CERT *ssl_cert_new(void); 1120 CERT *ssl_cert_dup(CERT *cert); 1121 void ssl_cert_free(CERT *c); 1122 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); 1123 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); 1124 int ssl_cert_add0_chain_cert(CERT *c, X509 *cert); 1125 int ssl_cert_add1_chain_cert(CERT *c, X509 *cert); 1126 1127 SESS_CERT *ssl_sess_cert_new(void); 1128 void ssl_sess_cert_free(SESS_CERT *sc); 1129 int ssl_get_new_session(SSL *s, int session); 1130 int ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block); 1131 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 1132 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, 1133 int num); 1134 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1135 const SSL_CIPHER * const *bp); 1136 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); 1137 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 1138 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 1139 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted, 1140 const char *rule_str); 1141 void ssl_update_cache(SSL *s, int mode); 1142 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 1143 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 1144 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 1145 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); 1146 1147 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 1148 int ssl_undefined_function(SSL *s); 1149 int ssl_undefined_void_function(void); 1150 int ssl_undefined_const_function(const SSL *s); 1151 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 1152 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, 1153 const struct ssl_sigalg **sap); 1154 DH *ssl_get_auto_dh(SSL *s); 1155 int ssl_cert_type(X509 *x, EVP_PKEY *pkey); 1156 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); 1157 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 1158 int ssl_has_ecc_ciphers(SSL *s); 1159 int ssl_verify_alarm_type(long type); 1160 1161 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); 1162 1163 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 1164 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 1165 int ssl3_send_server_certificate(SSL *s); 1166 int ssl3_send_newsession_ticket(SSL *s); 1167 int ssl3_send_cert_status(SSL *s); 1168 int ssl3_get_finished(SSL *s, int state_a, int state_b); 1169 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 1170 int ssl3_do_write(SSL *s, int type); 1171 int ssl3_send_alert(SSL *s, int level, int desc); 1172 int ssl3_get_req_cert_types(SSL *s, CBB *cbb); 1173 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1174 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); 1175 int ssl3_num_ciphers(void); 1176 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 1177 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 1178 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 1179 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 1180 int ssl3_renegotiate(SSL *ssl); 1181 1182 int ssl3_renegotiate_check(SSL *ssl); 1183 1184 int ssl3_dispatch_alert(SSL *s); 1185 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1186 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 1187 int ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk); 1188 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 1189 STACK_OF(SSL_CIPHER) *srvr); 1190 int ssl3_setup_buffers(SSL *s); 1191 int ssl3_setup_init_buffer(SSL *s); 1192 int ssl3_setup_read_buffer(SSL *s); 1193 int ssl3_setup_write_buffer(SSL *s); 1194 int ssl3_release_read_buffer(SSL *s); 1195 int ssl3_release_write_buffer(SSL *s); 1196 int ssl3_new(SSL *s); 1197 void ssl3_free(SSL *s); 1198 int ssl3_accept(SSL *s); 1199 int ssl3_connect(SSL *s); 1200 int ssl3_read(SSL *s, void *buf, int len); 1201 int ssl3_peek(SSL *s, void *buf, int len); 1202 int ssl3_write(SSL *s, const void *buf, int len); 1203 int ssl3_shutdown(SSL *s); 1204 void ssl3_clear(SSL *s); 1205 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 1206 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 1207 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 1208 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 1209 int ssl3_pending(const SSL *s); 1210 1211 int ssl3_handshake_msg_hdr_len(SSL *s); 1212 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, 1213 uint8_t msg_type); 1214 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); 1215 int ssl3_handshake_write(SSL *s); 1216 int ssl3_record_write(SSL *s, int type); 1217 1218 void tls1_record_sequence_increment(unsigned char *seq); 1219 int ssl3_do_change_cipher_spec(SSL *ssl); 1220 1221 long tls1_default_timeout(void); 1222 int dtls1_do_write(SSL *s, int type); 1223 int ssl3_packet_read(SSL *s, int plen); 1224 int ssl3_packet_extend(SSL *s, int plen); 1225 int ssl_server_legacy_first_packet(SSL *s); 1226 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1227 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 1228 unsigned int len); 1229 void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, 1230 unsigned long frag_off, unsigned long frag_len); 1231 void dtls1_set_message_header_int(SSL *s, unsigned char mt, 1232 unsigned long len, unsigned short seq_num, unsigned long frag_off, 1233 unsigned long frag_len); 1234 1235 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); 1236 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); 1237 1238 int dtls1_read_failed(SSL *s, int code); 1239 int dtls1_buffer_message(SSL *s, int ccs); 1240 int dtls1_retransmit_message(SSL *s, unsigned short seq, 1241 unsigned long frag_off, int *found); 1242 int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 1243 int dtls1_retransmit_buffered_messages(SSL *s); 1244 void dtls1_clear_record_buffer(SSL *s); 1245 int dtls1_get_message_header(unsigned char *data, 1246 struct hm_header_st *msg_hdr); 1247 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); 1248 void dtls1_reset_seq_numbers(SSL *s, int rw); 1249 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, 1250 unsigned short epoch); 1251 long dtls1_default_timeout(void); 1252 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); 1253 int dtls1_check_timeout_num(SSL *s); 1254 int dtls1_handle_timeout(SSL *s); 1255 const SSL_CIPHER *dtls1_get_cipher(unsigned int u); 1256 void dtls1_start_timer(SSL *s); 1257 void dtls1_stop_timer(SSL *s); 1258 int dtls1_is_timer_expired(SSL *s); 1259 void dtls1_double_timeout(SSL *s); 1260 unsigned int dtls1_min_mtu(void); 1261 1262 /* some client-only functions */ 1263 int dtls1_get_hello_verify(SSL *s); 1264 int ssl3_send_client_hello(SSL *s); 1265 int ssl3_get_server_hello(SSL *s); 1266 int ssl3_get_certificate_request(SSL *s); 1267 int ssl3_get_new_session_ticket(SSL *s); 1268 int ssl3_get_cert_status(SSL *s); 1269 int ssl3_get_server_done(SSL *s); 1270 int ssl3_send_client_verify(SSL *s); 1271 int ssl3_send_client_certificate(SSL *s); 1272 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 1273 int ssl3_send_client_key_exchange(SSL *s); 1274 int ssl3_get_server_key_exchange(SSL *s); 1275 int ssl3_get_server_certificate(SSL *s); 1276 int ssl3_check_cert_and_algorithm(SSL *s); 1277 int ssl3_check_finished(SSL *s); 1278 1279 /* some server-only functions */ 1280 int dtls1_send_hello_verify_request(SSL *s); 1281 int ssl3_get_client_hello(SSL *s); 1282 int ssl3_send_server_hello(SSL *s); 1283 int ssl3_send_hello_request(SSL *s); 1284 int ssl3_send_server_key_exchange(SSL *s); 1285 int ssl3_send_certificate_request(SSL *s); 1286 int ssl3_send_server_done(SSL *s); 1287 int ssl3_get_client_certificate(SSL *s); 1288 int ssl3_get_client_key_exchange(SSL *s); 1289 int ssl3_get_cert_verify(SSL *s); 1290 1291 int ssl_kex_dummy_ecdhe_x25519(EVP_PKEY *pkey); 1292 int ssl_kex_generate_ecdhe_ecp(EC_KEY *ecdh, int nid); 1293 int ssl_kex_public_ecdhe_ecp(EC_KEY *ecdh, CBB *cbb); 1294 int ssl_kex_peer_public_ecdhe_ecp(EC_KEY *ecdh, int nid, CBS *cbs); 1295 int ssl_kex_derive_ecdhe_ecp(EC_KEY *ecdh, EC_KEY *ecdh_peer, 1296 uint8_t **shared_key, size_t *shared_key_len); 1297 1298 int tls1_new(SSL *s); 1299 void tls1_free(SSL *s); 1300 void tls1_clear(SSL *s); 1301 1302 int dtls1_new(SSL *s); 1303 void dtls1_free(SSL *s); 1304 void dtls1_clear(SSL *s); 1305 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 1306 1307 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1308 int dtls1_get_record(SSL *s); 1309 int dtls1_dispatch_alert(SSL *s); 1310 1311 int ssl_init_wbio_buffer(SSL *s, int push); 1312 void ssl_free_wbio_buffer(SSL *s); 1313 1314 int tls1_transcript_hash_init(SSL *s); 1315 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); 1316 int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len, 1317 size_t *outlen); 1318 void tls1_transcript_hash_free(SSL *s); 1319 1320 int tls1_transcript_init(SSL *s); 1321 void tls1_transcript_free(SSL *s); 1322 void tls1_transcript_reset(SSL *s); 1323 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); 1324 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); 1325 void tls1_transcript_freeze(SSL *s); 1326 void tls1_transcript_unfreeze(SSL *s); 1327 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); 1328 1329 void tls1_cleanup_key_block(SSL *s); 1330 int tls1_change_cipher_state(SSL *s, int which); 1331 int tls1_setup_key_block(SSL *s); 1332 int tls1_enc(SSL *s, int snd); 1333 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); 1334 int tls1_mac(SSL *ssl, unsigned char *md, int snd); 1335 int tls1_generate_master_secret(SSL *s, unsigned char *out, 1336 unsigned char *p, int len); 1337 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1338 const char *label, size_t llen, const unsigned char *p, size_t plen, 1339 int use_context); 1340 int tls1_alert_code(int code); 1341 int ssl_ok(SSL *s); 1342 1343 int ssl_using_ecc_cipher(SSL *s); 1344 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 1345 1346 void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats, 1347 size_t *pformatslen); 1348 void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups, 1349 size_t *pgroupslen); 1350 1351 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, 1352 const int *groups, size_t ngroups); 1353 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, 1354 const char *groups); 1355 1356 int tls1_ec_curve_id2nid(const uint16_t curve_id); 1357 uint16_t tls1_ec_nid2curve_id(const int nid); 1358 int tls1_check_curve(SSL *s, const uint16_t group_id); 1359 int tls1_get_shared_curve(SSL *s); 1360 1361 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, 1362 size_t n, int *al); 1363 int ssl_check_clienthello_tlsext_early(SSL *s); 1364 int ssl_check_clienthello_tlsext_late(SSL *s); 1365 int ssl_check_serverhello_tlsext(SSL *s); 1366 1367 int tls1_process_ticket(SSL *s, CBS *session_id, CBS *ext_block, 1368 SSL_SESSION **ret); 1369 1370 long ssl_get_algorithm2(SSL *s); 1371 1372 int tls1_check_ec_server_key(SSL *s); 1373 1374 /* s3_cbc.c */ 1375 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD_INTERNAL *rec, 1376 unsigned int md_size, unsigned int orig_len); 1377 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD_INTERNAL *rec, 1378 unsigned int block_size, unsigned int mac_size); 1379 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 1380 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 1381 size_t *md_out_size, const unsigned char header[13], 1382 const unsigned char *data, size_t data_plus_mac_size, 1383 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 1384 unsigned int mac_secret_length); 1385 int SSL_state_func_code(int _state); 1386 1387 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) 1388 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) 1389 void SSL_error_internal(const SSL *s, int r, char *f, int l); 1390 1391 #ifndef OPENSSL_NO_SRTP 1392 1393 int srtp_find_profile_by_name(char *profile_name, 1394 SRTP_PROTECTION_PROFILE **pptr, unsigned int len); 1395 int srtp_find_profile_by_num(unsigned int profile_num, 1396 SRTP_PROTECTION_PROFILE **pptr); 1397 1398 #endif /* OPENSSL_NO_SRTP */ 1399 1400 __END_HIDDEN_DECLS 1401 1402 #endif 1403