1 /* $OpenBSD: ssl_locl.h,v 1.272.4.1 2020/08/10 18:59:47 tb 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 cert_pkey_st { 437 X509 *x509; 438 EVP_PKEY *privatekey; 439 STACK_OF(X509) *chain; 440 } CERT_PKEY; 441 442 typedef struct ssl_handshake_tls13_st { 443 uint16_t min_version; 444 uint16_t max_version; 445 uint16_t version; 446 447 int use_legacy; 448 int hrr; 449 450 /* Certificate and sigalg selected for use (static pointers) */ 451 const CERT_PKEY *cpk; 452 const struct ssl_sigalg *sigalg; 453 454 /* Version proposed by peer server. */ 455 uint16_t server_version; 456 457 uint16_t server_group; 458 struct tls13_key_share *key_share; 459 struct tls13_secrets *secrets; 460 461 uint8_t *cookie; 462 size_t cookie_len; 463 464 /* Preserved transcript hash. */ 465 uint8_t transcript_hash[EVP_MAX_MD_SIZE]; 466 size_t transcript_hash_len; 467 468 /* Legacy session ID. */ 469 uint8_t legacy_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 470 size_t legacy_session_id_len; 471 } SSL_HANDSHAKE_TLS13; 472 473 typedef struct ssl_ctx_internal_st { 474 uint16_t min_version; 475 uint16_t max_version; 476 477 unsigned long options; 478 unsigned long mode; 479 480 /* If this callback is not null, it will be called each 481 * time a session id is added to the cache. If this function 482 * returns 1, it means that the callback will do a 483 * SSL_SESSION_free() when it has finished using it. Otherwise, 484 * on 0, it means the callback has finished with it. 485 * If remove_session_cb is not null, it will be called when 486 * a session-id is removed from the cache. After the call, 487 * OpenSSL will SSL_SESSION_free() it. */ 488 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess); 489 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess); 490 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, 491 const unsigned char *data, int len, int *copy); 492 493 /* if defined, these override the X509_verify_cert() calls */ 494 int (*app_verify_callback)(X509_STORE_CTX *, void *); 495 void *app_verify_arg; 496 497 /* get client cert callback */ 498 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey); 499 500 /* cookie generate callback */ 501 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 502 unsigned int *cookie_len); 503 504 /* verify cookie callback */ 505 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie, 506 unsigned int cookie_len); 507 508 void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */ 509 510 /* callback that allows applications to peek at protocol messages */ 511 void (*msg_callback)(int write_p, int version, int content_type, 512 const void *buf, size_t len, SSL *ssl, void *arg); 513 void *msg_callback_arg; 514 515 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ 516 517 /* Default generate session ID callback. */ 518 GEN_SESSION_CB generate_session_id; 519 520 /* TLS extensions servername callback */ 521 int (*tlsext_servername_callback)(SSL*, int *, void *); 522 void *tlsext_servername_arg; 523 524 /* Callback to support customisation of ticket key setting */ 525 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name, 526 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 527 528 /* certificate status request info */ 529 /* Callback for status request */ 530 int (*tlsext_status_cb)(SSL *ssl, void *arg); 531 void *tlsext_status_arg; 532 533 struct lhash_st_SSL_SESSION *sessions; 534 535 /* Most session-ids that will be cached, default is 536 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ 537 unsigned long session_cache_size; 538 struct ssl_session_st *session_cache_head; 539 struct ssl_session_st *session_cache_tail; 540 541 /* This can have one of 2 values, ored together, 542 * SSL_SESS_CACHE_CLIENT, 543 * SSL_SESS_CACHE_SERVER, 544 * Default is SSL_SESSION_CACHE_SERVER, which means only 545 * SSL_accept which cache SSL_SESSIONS. */ 546 int session_cache_mode; 547 548 struct { 549 int sess_connect; /* SSL new conn - started */ 550 int sess_connect_renegotiate;/* SSL reneg - requested */ 551 int sess_connect_good; /* SSL new conne/reneg - finished */ 552 int sess_accept; /* SSL new accept - started */ 553 int sess_accept_renegotiate;/* SSL reneg - requested */ 554 int sess_accept_good; /* SSL accept/reneg - finished */ 555 int sess_miss; /* session lookup misses */ 556 int sess_timeout; /* reuse attempt on timeouted session */ 557 int sess_cache_full; /* session removed due to full cache */ 558 int sess_hit; /* session reuse actually done */ 559 int sess_cb_hit; /* session-id that was not 560 * in the cache was 561 * passed back via the callback. This 562 * indicates that the application is 563 * supplying session-id's from other 564 * processes - spooky :-) */ 565 } stats; 566 567 CRYPTO_EX_DATA ex_data; 568 569 /* same cipher_list but sorted for lookup */ 570 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 571 572 struct cert_st /* CERT */ *cert; 573 574 /* Default values used when no per-SSL value is defined follow */ 575 576 /* what we put in client cert requests */ 577 STACK_OF(X509_NAME) *client_CA; 578 579 long max_cert_list; 580 581 int read_ahead; 582 583 int quiet_shutdown; 584 585 /* Maximum amount of data to send in one fragment. 586 * actual record size can be more than this due to 587 * padding and MAC overheads. 588 */ 589 unsigned int max_send_fragment; 590 591 #ifndef OPENSSL_NO_ENGINE 592 /* Engine to pass requests for client certs to 593 */ 594 ENGINE *client_cert_engine; 595 #endif 596 597 /* RFC 4507 session ticket keys */ 598 unsigned char tlsext_tick_key_name[16]; 599 unsigned char tlsext_tick_hmac_key[16]; 600 unsigned char tlsext_tick_aes_key[16]; 601 602 /* SRTP profiles we are willing to do from RFC 5764 */ 603 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 604 605 /* 606 * ALPN information. 607 */ 608 609 /* 610 * Server callback function that allows the server to select the 611 * protocol for the connection. 612 * out: on successful return, this must point to the raw protocol 613 * name (without the length prefix). 614 * outlen: on successful return, this contains the length of out. 615 * in: points to the client's list of supported protocols in 616 * wire-format. 617 * inlen: the length of in. 618 */ 619 int (*alpn_select_cb)(SSL *s, const unsigned char **out, 620 unsigned char *outlen, const unsigned char *in, unsigned int inlen, 621 void *arg); 622 void *alpn_select_cb_arg; 623 624 /* Client list of supported protocols in wire format. */ 625 unsigned char *alpn_client_proto_list; 626 unsigned int alpn_client_proto_list_len; 627 628 size_t tlsext_ecpointformatlist_length; 629 uint8_t *tlsext_ecpointformatlist; /* our list */ 630 size_t tlsext_supportedgroups_length; 631 uint16_t *tlsext_supportedgroups; /* our list */ 632 } SSL_CTX_INTERNAL; 633 634 typedef struct ssl_internal_st { 635 struct tls13_ctx *tls13; 636 637 uint16_t min_version; 638 uint16_t max_version; 639 640 unsigned long options; /* protocol behaviour */ 641 unsigned long mode; /* API behaviour */ 642 643 /* Client list of supported protocols in wire format. */ 644 unsigned char *alpn_client_proto_list; 645 unsigned int alpn_client_proto_list_len; 646 647 /* XXX Callbacks */ 648 649 /* true when we are actually in SSL_accept() or SSL_connect() */ 650 int in_handshake; 651 int (*handshake_func)(SSL *); 652 /* callback that allows applications to peek at protocol messages */ 653 void (*msg_callback)(int write_p, int version, int content_type, 654 const void *buf, size_t len, SSL *ssl, void *arg); 655 void *msg_callback_arg; 656 657 /* Default generate session ID callback. */ 658 GEN_SESSION_CB generate_session_id; 659 660 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ 661 662 void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */ 663 664 /* TLS extension debug callback */ 665 void (*tlsext_debug_cb)(SSL *s, int client_server, int type, 666 unsigned char *data, int len, void *arg); 667 void *tlsext_debug_arg; 668 669 /* TLS Session Ticket extension callback */ 670 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; 671 void *tls_session_ticket_ext_cb_arg; 672 673 /* TLS pre-shared secret session resumption */ 674 tls_session_secret_cb_fn tls_session_secret_cb; 675 void *tls_session_secret_cb_arg; 676 677 /* XXX non-callback */ 678 679 int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */ 680 681 /* This holds a variable that indicates what we were doing 682 * when a 0 or -1 is returned. This is needed for 683 * non-blocking IO so we know what request needs re-doing when 684 * in SSL_accept or SSL_connect */ 685 int rwstate; 686 687 /* Imagine that here's a boolean member "init" that is 688 * switched as soon as SSL_set_{accept/connect}_state 689 * is called for the first time, so that "state" and 690 * "handshake_func" are properly initialized. But as 691 * handshake_func is == 0 until then, we use this 692 * test instead of an "init" member. 693 */ 694 695 int new_session;/* Generate a new session or reuse an old one. 696 * NB: For servers, the 'new' session may actually be a previously 697 * cached session or even the previous session unless 698 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */ 699 int quiet_shutdown;/* don't send shutdown packets */ 700 int shutdown; /* we have shut things down, 0x01 sent, 0x02 701 * for received */ 702 BUF_MEM *init_buf; /* buffer used during init */ 703 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ 704 int init_num; /* amount read/written */ 705 int init_off; /* amount read/written */ 706 707 /* used internally to point at a raw packet */ 708 unsigned char *packet; 709 unsigned int packet_length; 710 711 int read_ahead; /* Read as many input bytes as possible 712 * (for non-blocking reads) */ 713 714 int hit; /* reusing a previous session */ 715 716 /* crypto */ 717 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 718 719 /* These are the ones being used, the ones in SSL_SESSION are 720 * the ones to be 'copied' into these ones */ 721 int mac_flags; 722 723 SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then 724 enc_read_ctx and read_hash are 725 ignored. */ 726 727 SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then 728 enc_write_ctx and write_hash are 729 ignored. */ 730 731 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 732 EVP_MD_CTX *write_hash; /* used for mac generation */ 733 734 /* session info */ 735 736 /* extra application data */ 737 CRYPTO_EX_DATA ex_data; 738 739 /* client cert? */ 740 /* for server side, keep the list of CA_dn we can use */ 741 STACK_OF(X509_NAME) *client_CA; 742 743 /* set this flag to 1 and a sleep(1) is put into all SSL_read() 744 * and SSL_write() calls, good for nbio debuging :-) */ 745 int debug; 746 long max_cert_list; 747 int first_packet; 748 749 int servername_done; /* no further mod of servername 750 0 : call the servername extension callback. 751 1 : prepare 2, allow last ack just after in server callback. 752 2 : don't call servername callback, no ack in server hello 753 */ 754 755 /* Expect OCSP CertificateStatus message */ 756 int tlsext_status_expected; 757 /* OCSP status request only */ 758 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; 759 X509_EXTENSIONS *tlsext_ocsp_exts; 760 /* OCSP response received or to be sent */ 761 unsigned char *tlsext_ocsp_resp; 762 int tlsext_ocsp_resplen; 763 764 /* RFC4507 session ticket expected to be received or sent */ 765 int tlsext_ticket_expected; 766 767 size_t tlsext_ecpointformatlist_length; 768 uint8_t *tlsext_ecpointformatlist; /* our list */ 769 size_t tlsext_supportedgroups_length; 770 uint16_t *tlsext_supportedgroups; /* our list */ 771 772 /* TLS Session Ticket extension override */ 773 TLS_SESSION_TICKET_EXT *tlsext_session_ticket; 774 775 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ 776 SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ 777 778 int renegotiate;/* 1 if we are renegotiating. 779 * 2 if we are a server and are inside a handshake 780 * (i.e. not just sending a HelloRequest) */ 781 782 int rstate; /* where we are when reading */ 783 784 int mac_packet; 785 786 int empty_record_count; 787 } SSL_INTERNAL; 788 789 typedef struct ssl3_record_internal_st { 790 int type; /* type of record */ 791 unsigned int length; /* How many bytes available */ 792 unsigned int padding_length; /* Number of padding bytes. */ 793 unsigned int off; /* read/write offset into 'buf' */ 794 unsigned char *data; /* pointer to the record data */ 795 unsigned char *input; /* where the decode bytes are */ 796 unsigned long epoch; /* epoch number, needed by DTLS1 */ 797 unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 798 } SSL3_RECORD_INTERNAL; 799 800 typedef struct ssl3_buffer_internal_st { 801 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 802 * see ssl3_setup_buffers() */ 803 size_t len; /* buffer size */ 804 int offset; /* where to 'copy from' */ 805 int left; /* how many bytes left */ 806 } SSL3_BUFFER_INTERNAL; 807 808 typedef struct ssl3_state_internal_st { 809 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 810 int read_mac_secret_size; 811 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 812 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 813 int write_mac_secret_size; 814 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 815 816 SSL3_BUFFER_INTERNAL rbuf; /* read IO goes into here */ 817 SSL3_BUFFER_INTERNAL wbuf; /* write IO goes into here */ 818 819 /* we allow one fatal and one warning alert to be outstanding, 820 * send close alert via the warning alert */ 821 int alert_dispatch; 822 unsigned char send_alert[2]; 823 824 /* flags for countermeasure against known-IV weakness */ 825 int need_empty_fragments; 826 int empty_fragment_done; 827 828 SSL3_RECORD_INTERNAL rrec; /* each decoded record goes in here */ 829 SSL3_RECORD_INTERNAL wrec; /* goes out from here */ 830 831 /* storage for Alert/Handshake protocol data received but not 832 * yet processed by ssl3_read_bytes: */ 833 unsigned char alert_fragment[2]; 834 unsigned int alert_fragment_len; 835 unsigned char handshake_fragment[4]; 836 unsigned int handshake_fragment_len; 837 838 /* partial write - check the numbers match */ 839 unsigned int wnum; /* number of bytes sent so far */ 840 int wpend_tot; /* number bytes written */ 841 int wpend_type; 842 int wpend_ret; /* number of bytes submitted */ 843 const unsigned char *wpend_buf; 844 845 /* Transcript of handshake messages that have been sent and received. */ 846 BUF_MEM *handshake_transcript; 847 848 /* Rolling hash of handshake messages. */ 849 EVP_MD_CTX *handshake_hash; 850 851 /* this is set whenerver we see a change_cipher_spec message 852 * come in when we are not looking for one */ 853 int change_cipher_spec; 854 855 int warn_alert; 856 int fatal_alert; 857 858 /* This flag is set when we should renegotiate ASAP, basically when 859 * there is no more data in the read or write buffers */ 860 int renegotiate; 861 int total_renegotiations; 862 int num_renegotiations; 863 864 int in_read_app_data; 865 866 SSL_HANDSHAKE hs; 867 SSL_HANDSHAKE_TLS13 hs_tls13; 868 869 struct { 870 int new_mac_secret_size; 871 872 /* actually only needs to be 16+20 */ 873 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 874 875 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 876 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 877 int finish_md_len; 878 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 879 int peer_finish_md_len; 880 881 unsigned long message_size; 882 int message_type; 883 884 DH *dh; 885 886 EC_KEY *ecdh; /* holds short lived ECDH key */ 887 int ecdh_nid; 888 889 uint8_t *x25519; 890 891 int reuse_message; 892 893 /* used for certificate requests */ 894 int cert_req; 895 int ctype_num; 896 char ctype[SSL3_CT_NUMBER]; 897 STACK_OF(X509_NAME) *ca_names; 898 899 const EVP_CIPHER *new_sym_enc; 900 const EVP_AEAD *new_aead; 901 const EVP_MD *new_hash; 902 int new_mac_pkey_type; 903 int cert_request; 904 } tmp; 905 906 /* Connection binding to prevent renegotiation attacks */ 907 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 908 unsigned char previous_client_finished_len; 909 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 910 unsigned char previous_server_finished_len; 911 int send_connection_binding; /* TODOEKR */ 912 913 /* Set if we saw a Renegotiation Indication extension from our peer. */ 914 int renegotiate_seen; 915 916 /* 917 * ALPN information. 918 * 919 * In a server these point to the selected ALPN protocol after the 920 * ClientHello has been processed. In a client these contain the 921 * protocol that the server selected once the ServerHello has been 922 * processed. 923 */ 924 unsigned char *alpn_selected; 925 size_t alpn_selected_len; 926 } SSL3_STATE_INTERNAL; 927 #define S3I(s) (s->s3->internal) 928 929 typedef struct dtls1_record_data_internal_st { 930 unsigned char *packet; 931 unsigned int packet_length; 932 SSL3_BUFFER_INTERNAL rbuf; 933 SSL3_RECORD_INTERNAL rrec; 934 } DTLS1_RECORD_DATA_INTERNAL; 935 936 typedef struct dtls1_state_internal_st { 937 unsigned int send_cookie; 938 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 939 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; 940 unsigned int cookie_len; 941 942 /* 943 * The current data and handshake epoch. This is initially 944 * undefined, and starts at zero once the initial handshake is 945 * completed 946 */ 947 unsigned short r_epoch; 948 unsigned short w_epoch; 949 950 /* records being received in the current epoch */ 951 DTLS1_BITMAP bitmap; 952 953 /* renegotiation starts a new set of sequence numbers */ 954 DTLS1_BITMAP next_bitmap; 955 956 /* handshake message numbers */ 957 unsigned short handshake_write_seq; 958 unsigned short next_handshake_write_seq; 959 960 unsigned short handshake_read_seq; 961 962 /* save last sequence number for retransmissions */ 963 unsigned char last_write_sequence[8]; 964 965 /* Received handshake records (processed and unprocessed) */ 966 record_pqueue unprocessed_rcds; 967 record_pqueue processed_rcds; 968 969 /* Buffered handshake messages */ 970 struct _pqueue *buffered_messages; 971 972 /* Buffered application records. 973 * Only for records between CCS and Finished 974 * to prevent either protocol violation or 975 * unnecessary message loss. 976 */ 977 record_pqueue buffered_app_data; 978 979 /* Is set when listening for new connections with dtls1_listen() */ 980 unsigned int listen; 981 982 unsigned int mtu; /* max DTLS packet size */ 983 984 struct hm_header_st w_msg_hdr; 985 struct hm_header_st r_msg_hdr; 986 987 struct dtls1_timeout_st timeout; 988 989 /* storage for Alert/Handshake protocol data received but not 990 * yet processed by ssl3_read_bytes: */ 991 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; 992 unsigned int alert_fragment_len; 993 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; 994 unsigned int handshake_fragment_len; 995 996 unsigned int retransmitting; 997 unsigned int change_cipher_spec_ok; 998 } DTLS1_STATE_INTERNAL; 999 #define D1I(s) (s->d1->internal) 1000 1001 typedef struct cert_st { 1002 /* Current active set */ 1003 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array 1004 * Probably it would make more sense to store 1005 * an index, not a pointer. */ 1006 1007 /* The following masks are for the key and auth 1008 * algorithms that are supported by the certs below */ 1009 int valid; 1010 unsigned long mask_k; 1011 unsigned long mask_a; 1012 1013 DH *dh_tmp; 1014 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); 1015 int dh_tmp_auto; 1016 1017 CERT_PKEY pkeys[SSL_PKEY_NUM]; 1018 1019 int references; /* >1 only if SSL_copy_session_id is used */ 1020 } CERT; 1021 1022 1023 typedef struct sess_cert_st { 1024 STACK_OF(X509) *cert_chain; /* as received from peer */ 1025 1026 /* The 'peer_...' members are used only by clients. */ 1027 int peer_cert_type; 1028 1029 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ 1030 CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; 1031 /* Obviously we don't have the private keys of these, 1032 * so maybe we shouldn't even use the CERT_PKEY type here. */ 1033 1034 int peer_nid; 1035 DH *peer_dh_tmp; 1036 EC_KEY *peer_ecdh_tmp; 1037 uint8_t *peer_x25519_tmp; 1038 1039 int references; /* actually always 1 at the moment */ 1040 } SESS_CERT; 1041 1042 /*#define SSL_DEBUG */ 1043 /*#define RSA_DEBUG */ 1044 1045 typedef struct ssl3_enc_method { 1046 unsigned int enc_flags; 1047 } SSL3_ENC_METHOD; 1048 1049 /* 1050 * Flag values for enc_flags. 1051 */ 1052 1053 /* Uses explicit IV. */ 1054 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) 1055 1056 /* Uses signature algorithms extension. */ 1057 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 1058 1059 /* Uses SHA256 default PRF. */ 1060 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 1061 1062 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 1063 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 1064 1065 /* Allow TLS 1.3 ciphersuites only. */ 1066 #define SSL_ENC_FLAG_TLS1_3_CIPHERS (1 << 5) 1067 1068 /* 1069 * ssl_aead_ctx_st contains information about an AEAD that is being used to 1070 * encrypt an SSL connection. 1071 */ 1072 struct ssl_aead_ctx_st { 1073 EVP_AEAD_CTX ctx; 1074 /* 1075 * fixed_nonce contains any bytes of the nonce that are fixed for all 1076 * records. 1077 */ 1078 unsigned char fixed_nonce[12]; 1079 unsigned char fixed_nonce_len; 1080 unsigned char variable_nonce_len; 1081 unsigned char xor_fixed_nonce; 1082 unsigned char tag_len; 1083 /* 1084 * variable_nonce_in_record is non-zero if the variable nonce 1085 * for a record is included as a prefix before the ciphertext. 1086 */ 1087 char variable_nonce_in_record; 1088 }; 1089 1090 extern SSL_CIPHER ssl3_ciphers[]; 1091 1092 const char *ssl_version_string(int ver); 1093 int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1094 int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1095 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); 1096 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver, 1097 uint16_t *out_ver); 1098 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver, 1099 uint16_t *out_ver); 1100 uint16_t ssl_max_server_version(SSL *s); 1101 int ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver, 1102 uint16_t max_ver); 1103 1104 const SSL_METHOD *tls_legacy_client_method(void); 1105 const SSL_METHOD *tls_legacy_server_method(void); 1106 1107 const SSL_METHOD *dtls1_get_client_method(int ver); 1108 const SSL_METHOD *dtls1_get_server_method(int ver); 1109 const SSL_METHOD *tls1_get_client_method(int ver); 1110 const SSL_METHOD *tls1_get_server_method(int ver); 1111 1112 extern SSL3_ENC_METHOD DTLSv1_enc_data; 1113 extern SSL3_ENC_METHOD TLSv1_enc_data; 1114 extern SSL3_ENC_METHOD TLSv1_1_enc_data; 1115 extern SSL3_ENC_METHOD TLSv1_2_enc_data; 1116 extern SSL3_ENC_METHOD TLSv1_3_enc_data; 1117 1118 void ssl_clear_cipher_state(SSL *s); 1119 void ssl_clear_cipher_read_state(SSL *s); 1120 void ssl_clear_cipher_write_state(SSL *s); 1121 int ssl_clear_bad_session(SSL *s); 1122 1123 CERT *ssl_cert_new(void); 1124 CERT *ssl_cert_dup(CERT *cert); 1125 void ssl_cert_free(CERT *c); 1126 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); 1127 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); 1128 int ssl_cert_add0_chain_cert(CERT *c, X509 *cert); 1129 int ssl_cert_add1_chain_cert(CERT *c, X509 *cert); 1130 1131 SESS_CERT *ssl_sess_cert_new(void); 1132 void ssl_sess_cert_free(SESS_CERT *sc); 1133 int ssl_get_new_session(SSL *s, int session); 1134 int ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block); 1135 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 1136 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, 1137 int num); 1138 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1139 const SSL_CIPHER * const *bp); 1140 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); 1141 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 1142 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 1143 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted, 1144 const char *rule_str); 1145 void ssl_update_cache(SSL *s, int mode); 1146 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 1147 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 1148 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 1149 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); 1150 1151 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 1152 int ssl_undefined_function(SSL *s); 1153 int ssl_undefined_void_function(void); 1154 int ssl_undefined_const_function(const SSL *s); 1155 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 1156 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, 1157 const struct ssl_sigalg **sap); 1158 DH *ssl_get_auto_dh(SSL *s); 1159 int ssl_cert_type(X509 *x, EVP_PKEY *pkey); 1160 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); 1161 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 1162 int ssl_has_ecc_ciphers(SSL *s); 1163 int ssl_verify_alarm_type(long type); 1164 1165 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); 1166 1167 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 1168 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 1169 int ssl3_send_server_certificate(SSL *s); 1170 int ssl3_send_newsession_ticket(SSL *s); 1171 int ssl3_send_cert_status(SSL *s); 1172 int ssl3_get_finished(SSL *s, int state_a, int state_b); 1173 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 1174 int ssl3_do_write(SSL *s, int type); 1175 int ssl3_send_alert(SSL *s, int level, int desc); 1176 int ssl3_get_req_cert_types(SSL *s, CBB *cbb); 1177 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1178 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); 1179 int ssl3_num_ciphers(void); 1180 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 1181 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 1182 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 1183 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 1184 int ssl3_renegotiate(SSL *ssl); 1185 1186 int ssl3_renegotiate_check(SSL *ssl); 1187 1188 int ssl3_dispatch_alert(SSL *s); 1189 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1190 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 1191 int ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk); 1192 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 1193 STACK_OF(SSL_CIPHER) *srvr); 1194 int ssl3_setup_buffers(SSL *s); 1195 int ssl3_setup_init_buffer(SSL *s); 1196 int ssl3_setup_read_buffer(SSL *s); 1197 int ssl3_setup_write_buffer(SSL *s); 1198 int ssl3_release_read_buffer(SSL *s); 1199 int ssl3_release_write_buffer(SSL *s); 1200 int ssl3_new(SSL *s); 1201 void ssl3_free(SSL *s); 1202 int ssl3_accept(SSL *s); 1203 int ssl3_connect(SSL *s); 1204 int ssl3_read(SSL *s, void *buf, int len); 1205 int ssl3_peek(SSL *s, void *buf, int len); 1206 int ssl3_write(SSL *s, const void *buf, int len); 1207 int ssl3_shutdown(SSL *s); 1208 void ssl3_clear(SSL *s); 1209 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 1210 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 1211 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 1212 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 1213 int ssl3_pending(const SSL *s); 1214 1215 int ssl3_handshake_msg_hdr_len(SSL *s); 1216 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, 1217 uint8_t msg_type); 1218 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); 1219 int ssl3_handshake_write(SSL *s); 1220 int ssl3_record_write(SSL *s, int type); 1221 1222 void tls1_record_sequence_increment(unsigned char *seq); 1223 int ssl3_do_change_cipher_spec(SSL *ssl); 1224 1225 long tls1_default_timeout(void); 1226 int dtls1_do_write(SSL *s, int type); 1227 int ssl3_packet_read(SSL *s, int plen); 1228 int ssl3_packet_extend(SSL *s, int plen); 1229 int ssl_server_legacy_first_packet(SSL *s); 1230 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1231 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 1232 unsigned int len); 1233 void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, 1234 unsigned long frag_off, unsigned long frag_len); 1235 void dtls1_set_message_header_int(SSL *s, unsigned char mt, 1236 unsigned long len, unsigned short seq_num, unsigned long frag_off, 1237 unsigned long frag_len); 1238 1239 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); 1240 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); 1241 1242 int dtls1_read_failed(SSL *s, int code); 1243 int dtls1_buffer_message(SSL *s, int ccs); 1244 int dtls1_retransmit_message(SSL *s, unsigned short seq, 1245 unsigned long frag_off, int *found); 1246 int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 1247 int dtls1_retransmit_buffered_messages(SSL *s); 1248 void dtls1_clear_record_buffer(SSL *s); 1249 int dtls1_get_message_header(unsigned char *data, 1250 struct hm_header_st *msg_hdr); 1251 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); 1252 void dtls1_reset_seq_numbers(SSL *s, int rw); 1253 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, 1254 unsigned short epoch); 1255 long dtls1_default_timeout(void); 1256 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); 1257 int dtls1_check_timeout_num(SSL *s); 1258 int dtls1_handle_timeout(SSL *s); 1259 const SSL_CIPHER *dtls1_get_cipher(unsigned int u); 1260 void dtls1_start_timer(SSL *s); 1261 void dtls1_stop_timer(SSL *s); 1262 int dtls1_is_timer_expired(SSL *s); 1263 void dtls1_double_timeout(SSL *s); 1264 unsigned int dtls1_min_mtu(void); 1265 1266 /* some client-only functions */ 1267 int dtls1_get_hello_verify(SSL *s); 1268 int ssl3_send_client_hello(SSL *s); 1269 int ssl3_get_server_hello(SSL *s); 1270 int ssl3_get_certificate_request(SSL *s); 1271 int ssl3_get_new_session_ticket(SSL *s); 1272 int ssl3_get_cert_status(SSL *s); 1273 int ssl3_get_server_done(SSL *s); 1274 int ssl3_send_client_verify(SSL *s); 1275 int ssl3_send_client_certificate(SSL *s); 1276 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 1277 int ssl3_send_client_key_exchange(SSL *s); 1278 int ssl3_get_server_key_exchange(SSL *s); 1279 int ssl3_get_server_certificate(SSL *s); 1280 int ssl3_check_cert_and_algorithm(SSL *s); 1281 int ssl3_check_finished(SSL *s); 1282 1283 /* some server-only functions */ 1284 int dtls1_send_hello_verify_request(SSL *s); 1285 int ssl3_get_client_hello(SSL *s); 1286 int ssl3_send_server_hello(SSL *s); 1287 int ssl3_send_hello_request(SSL *s); 1288 int ssl3_send_server_key_exchange(SSL *s); 1289 int ssl3_send_certificate_request(SSL *s); 1290 int ssl3_send_server_done(SSL *s); 1291 int ssl3_get_client_certificate(SSL *s); 1292 int ssl3_get_client_key_exchange(SSL *s); 1293 int ssl3_get_cert_verify(SSL *s); 1294 1295 int ssl_kex_dummy_ecdhe_x25519(EVP_PKEY *pkey); 1296 int ssl_kex_generate_ecdhe_ecp(EC_KEY *ecdh, int nid); 1297 int ssl_kex_public_ecdhe_ecp(EC_KEY *ecdh, CBB *cbb); 1298 int ssl_kex_peer_public_ecdhe_ecp(EC_KEY *ecdh, int nid, CBS *cbs); 1299 int ssl_kex_derive_ecdhe_ecp(EC_KEY *ecdh, EC_KEY *ecdh_peer, 1300 uint8_t **shared_key, size_t *shared_key_len); 1301 1302 int tls1_new(SSL *s); 1303 void tls1_free(SSL *s); 1304 void tls1_clear(SSL *s); 1305 1306 int dtls1_new(SSL *s); 1307 void dtls1_free(SSL *s); 1308 void dtls1_clear(SSL *s); 1309 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 1310 1311 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1312 int dtls1_get_record(SSL *s); 1313 int dtls1_dispatch_alert(SSL *s); 1314 1315 int ssl_init_wbio_buffer(SSL *s, int push); 1316 void ssl_free_wbio_buffer(SSL *s); 1317 1318 int tls1_transcript_hash_init(SSL *s); 1319 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); 1320 int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len, 1321 size_t *outlen); 1322 void tls1_transcript_hash_free(SSL *s); 1323 1324 int tls1_transcript_init(SSL *s); 1325 void tls1_transcript_free(SSL *s); 1326 void tls1_transcript_reset(SSL *s); 1327 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); 1328 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); 1329 void tls1_transcript_freeze(SSL *s); 1330 void tls1_transcript_unfreeze(SSL *s); 1331 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); 1332 1333 void tls1_cleanup_key_block(SSL *s); 1334 int tls1_change_cipher_state(SSL *s, int which); 1335 int tls1_setup_key_block(SSL *s); 1336 int tls1_enc(SSL *s, int snd); 1337 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); 1338 int tls1_mac(SSL *ssl, unsigned char *md, int snd); 1339 int tls1_generate_master_secret(SSL *s, unsigned char *out, 1340 unsigned char *p, int len); 1341 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1342 const char *label, size_t llen, const unsigned char *p, size_t plen, 1343 int use_context); 1344 int tls1_alert_code(int code); 1345 int ssl_ok(SSL *s); 1346 1347 int ssl_using_ecc_cipher(SSL *s); 1348 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 1349 1350 void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats, 1351 size_t *pformatslen); 1352 void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups, 1353 size_t *pgroupslen); 1354 1355 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, 1356 const int *groups, size_t ngroups); 1357 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, 1358 const char *groups); 1359 1360 int tls1_ec_curve_id2nid(const uint16_t curve_id); 1361 uint16_t tls1_ec_nid2curve_id(const int nid); 1362 int tls1_check_curve(SSL *s, const uint16_t group_id); 1363 int tls1_get_shared_curve(SSL *s); 1364 1365 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, 1366 size_t n, int *al); 1367 int ssl_check_clienthello_tlsext_early(SSL *s); 1368 int ssl_check_clienthello_tlsext_late(SSL *s); 1369 int ssl_check_serverhello_tlsext(SSL *s); 1370 1371 int tls1_process_ticket(SSL *s, CBS *session_id, CBS *ext_block, 1372 SSL_SESSION **ret); 1373 1374 long ssl_get_algorithm2(SSL *s); 1375 1376 int tls1_check_ec_server_key(SSL *s); 1377 1378 /* s3_cbc.c */ 1379 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD_INTERNAL *rec, 1380 unsigned int md_size, unsigned int orig_len); 1381 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD_INTERNAL *rec, 1382 unsigned int block_size, unsigned int mac_size); 1383 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 1384 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 1385 size_t *md_out_size, const unsigned char header[13], 1386 const unsigned char *data, size_t data_plus_mac_size, 1387 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 1388 unsigned int mac_secret_length); 1389 int SSL_state_func_code(int _state); 1390 1391 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) 1392 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) 1393 void SSL_error_internal(const SSL *s, int r, char *f, int l); 1394 1395 #ifndef OPENSSL_NO_SRTP 1396 1397 int srtp_find_profile_by_name(char *profile_name, 1398 SRTP_PROTECTION_PROFILE **pptr, unsigned int len); 1399 int srtp_find_profile_by_num(unsigned int profile_num, 1400 SRTP_PROTECTION_PROFILE **pptr); 1401 1402 #endif /* OPENSSL_NO_SRTP */ 1403 1404 __END_HIDDEN_DECLS 1405 1406 #endif 1407