1 /* $OpenBSD: ssl_locl.h,v 1.295 2020/09/24 18:12:00 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 #ifndef LIBRESSL_HAS_TLS1_3_SERVER 177 #define LIBRESSL_HAS_TLS1_3_SERVER 178 #endif 179 180 #if defined(LIBRESSL_HAS_TLS1_3_CLIENT) || defined(LIBRESSL_HAS_TLS1_3_SERVER) 181 #define LIBRESSL_HAS_TLS1_3 182 #endif 183 184 /* LOCAL STUFF */ 185 186 #define SSL_DECRYPT 0 187 #define SSL_ENCRYPT 1 188 189 /* 190 * Define the Bitmasks for SSL_CIPHER.algorithms. 191 * This bits are used packed as dense as possible. If new methods/ciphers 192 * etc will be added, the bits a likely to change, so this information 193 * is for internal library use only, even though SSL_CIPHER.algorithms 194 * can be publicly accessed. 195 * Use the according functions for cipher management instead. 196 * 197 * The bit mask handling in the selection and sorting scheme in 198 * ssl_create_cipher_list() has only limited capabilities, reflecting 199 * that the different entities within are mutually exclusive: 200 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 201 */ 202 203 /* Bits for algorithm_mkey (key exchange algorithm) */ 204 #define SSL_kRSA 0x00000001L /* RSA key exchange */ 205 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ 206 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ 207 #define SSL_kGOST 0x00000200L /* GOST key exchange */ 208 #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */ 209 210 /* Bits for algorithm_auth (server authentication) */ 211 #define SSL_aRSA 0x00000001L /* RSA auth */ 212 #define SSL_aDSS 0x00000002L /* DSS auth */ 213 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ 214 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ 215 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ 216 #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */ 217 218 /* Bits for algorithm_enc (symmetric encryption) */ 219 #define SSL_DES 0x00000001L 220 #define SSL_3DES 0x00000002L 221 #define SSL_RC4 0x00000004L 222 #define SSL_IDEA 0x00000008L 223 #define SSL_eNULL 0x00000010L 224 #define SSL_AES128 0x00000020L 225 #define SSL_AES256 0x00000040L 226 #define SSL_CAMELLIA128 0x00000080L 227 #define SSL_CAMELLIA256 0x00000100L 228 #define SSL_eGOST2814789CNT 0x00000200L 229 #define SSL_AES128GCM 0x00000400L 230 #define SSL_AES256GCM 0x00000800L 231 #define SSL_CHACHA20POLY1305 0x00001000L 232 233 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) 234 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 235 236 237 /* Bits for algorithm_mac (symmetric authentication) */ 238 239 #define SSL_MD5 0x00000001L 240 #define SSL_SHA1 0x00000002L 241 #define SSL_GOST94 0x00000004L 242 #define SSL_GOST89MAC 0x00000008L 243 #define SSL_SHA256 0x00000010L 244 #define SSL_SHA384 0x00000020L 245 /* Not a real MAC, just an indication it is part of cipher */ 246 #define SSL_AEAD 0x00000040L 247 #define SSL_STREEBOG256 0x00000080L 248 249 /* Bits for algorithm_ssl (protocol version) */ 250 #define SSL_SSLV3 0x00000002L 251 #define SSL_TLSV1 SSL_SSLV3 /* for now */ 252 #define SSL_TLSV1_2 0x00000004L 253 #define SSL_TLSV1_3 0x00000008L 254 255 256 /* Bits for algorithm2 (handshake digests and other extra flags) */ 257 258 #define SSL_HANDSHAKE_MAC_MASK 0xff0 259 #define SSL_HANDSHAKE_MAC_MD5 0x010 260 #define SSL_HANDSHAKE_MAC_SHA 0x020 261 #define SSL_HANDSHAKE_MAC_GOST94 0x040 262 #define SSL_HANDSHAKE_MAC_SHA256 0x080 263 #define SSL_HANDSHAKE_MAC_SHA384 0x100 264 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 265 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) 266 267 #define SSL3_CK_ID 0x03000000 268 #define SSL3_CK_VALUE_MASK 0x0000ffff 269 270 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) 271 272 #define TLS1_PRF_DGST_SHIFT 10 273 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) 274 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) 275 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) 276 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) 277 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) 278 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) 279 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) 280 281 /* 282 * Stream MAC for GOST ciphersuites from cryptopro draft 283 * (currently this also goes into algorithm2). 284 */ 285 #define TLS1_STREAM_MAC 0x04 286 287 /* 288 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that 289 * indicates that the variable part of the nonce is included as a prefix of 290 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) 291 */ 292 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) 293 294 /* 295 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce 296 * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD. 297 */ 298 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ 299 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) 300 301 /* 302 * Cipher strength information. 303 */ 304 #define SSL_STRONG_MASK 0x000001fcL 305 #define SSL_STRONG_NONE 0x00000004L 306 #define SSL_LOW 0x00000020L 307 #define SSL_MEDIUM 0x00000040L 308 #define SSL_HIGH 0x00000080L 309 310 /* 311 * The keylength (measured in RSA key bits, I guess) for temporary keys. 312 * Cipher argument is so that this can be variable in the future. 313 */ 314 #define SSL_C_PKEYLENGTH(c) 1024 315 316 /* Check if an SSL structure is using DTLS. */ 317 #define SSL_IS_DTLS(s) \ 318 (s->method->internal->version == DTLS1_VERSION) 319 320 /* See if we need explicit IV. */ 321 #define SSL_USE_EXPLICIT_IV(s) \ 322 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 323 324 /* See if we use signature algorithms extension. */ 325 #define SSL_USE_SIGALGS(s) \ 326 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 327 328 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 329 #define SSL_USE_TLS1_2_CIPHERS(s) \ 330 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 331 332 /* Allow TLS 1.3 ciphersuites only. */ 333 #define SSL_USE_TLS1_3_CIPHERS(s) \ 334 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_3_CIPHERS) 335 336 #define SSL_PKEY_RSA 0 337 #define SSL_PKEY_ECC 1 338 #define SSL_PKEY_GOST01 2 339 #define SSL_PKEY_NUM 3 340 341 #define SSL_MAX_EMPTY_RECORDS 32 342 343 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | 344 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) 345 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 346 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 347 * SSL_aRSA <- RSA_ENC | RSA_SIGN 348 * SSL_aDSS <- DSA_SIGN 349 */ 350 351 /* 352 #define CERT_INVALID 0 353 #define CERT_PUBLIC_KEY 1 354 #define CERT_PRIVATE_KEY 2 355 */ 356 357 /* From ECC-TLS draft, used in encoding the curve type in 358 * ECParameters 359 */ 360 #define EXPLICIT_PRIME_CURVE_TYPE 1 361 #define EXPLICIT_CHAR2_CURVE_TYPE 2 362 #define NAMED_CURVE_TYPE 3 363 364 typedef struct ssl_method_internal_st { 365 int version; 366 367 uint16_t min_version; 368 uint16_t max_version; 369 370 int (*ssl_new)(SSL *s); 371 void (*ssl_clear)(SSL *s); 372 void (*ssl_free)(SSL *s); 373 374 int (*ssl_accept)(SSL *s); 375 int (*ssl_connect)(SSL *s); 376 int (*ssl_shutdown)(SSL *s); 377 378 int (*ssl_renegotiate)(SSL *s); 379 int (*ssl_renegotiate_check)(SSL *s); 380 381 int (*ssl_pending)(const SSL *s); 382 int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, int len, 383 int peek); 384 int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len); 385 386 struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 387 } SSL_METHOD_INTERNAL; 388 389 typedef struct ssl_session_internal_st { 390 CRYPTO_EX_DATA ex_data; /* application specific data */ 391 392 /* These are used to make removal of session-ids more 393 * efficient and to implement a maximum cache size. */ 394 struct ssl_session_st *prev, *next; 395 396 /* Used to indicate that session resumption is not allowed. 397 * Applications can also set this bit for a new session via 398 * not_resumable_session_cb to disable session caching and tickets. */ 399 int not_resumable; 400 401 /* The cert is the certificate used to establish this connection */ 402 struct sess_cert_st /* SESS_CERT */ *sess_cert; 403 404 size_t tlsext_ecpointformatlist_length; 405 uint8_t *tlsext_ecpointformatlist; /* peer's list */ 406 size_t tlsext_supportedgroups_length; 407 uint16_t *tlsext_supportedgroups; /* peer's list */ 408 } SSL_SESSION_INTERNAL; 409 #define SSI(s) (s->session->internal) 410 411 typedef struct ssl_handshake_st { 412 /* state contains one of the SSL3_ST_* values. */ 413 int state; 414 415 /* used when SSL_ST_FLUSH_DATA is entered */ 416 int next_state; 417 418 /* new_cipher is the cipher being negotiated in this handshake. */ 419 const SSL_CIPHER *new_cipher; 420 421 /* key_block is the record-layer key block for TLS 1.2 and earlier. */ 422 int key_block_len; 423 unsigned char *key_block; 424 425 /* Extensions seen in this handshake. */ 426 uint32_t extensions_seen; 427 428 /* sigalgs offered in this handshake in wire form */ 429 size_t sigalgs_len; 430 uint8_t *sigalgs; 431 } SSL_HANDSHAKE; 432 433 typedef struct cert_pkey_st { 434 X509 *x509; 435 EVP_PKEY *privatekey; 436 STACK_OF(X509) *chain; 437 } CERT_PKEY; 438 439 typedef struct ssl_handshake_tls13_st { 440 uint16_t min_version; 441 uint16_t max_version; 442 uint16_t version; 443 444 int use_legacy; 445 int hrr; 446 447 /* Certificate and sigalg selected for use (static pointers). */ 448 const CERT_PKEY *cpk; 449 const struct ssl_sigalg *sigalg; 450 451 /* Version proposed by peer server. */ 452 uint16_t server_version; 453 454 uint16_t server_group; 455 struct tls13_key_share *key_share; 456 struct tls13_secrets *secrets; 457 458 uint8_t *cookie; 459 size_t cookie_len; 460 461 /* Preserved transcript hash. */ 462 uint8_t transcript_hash[EVP_MAX_MD_SIZE]; 463 size_t transcript_hash_len; 464 465 /* Legacy session ID. */ 466 uint8_t legacy_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 467 size_t legacy_session_id_len; 468 469 /* ClientHello hash, used to validate following HelloRetryRequest */ 470 EVP_MD_CTX *clienthello_md_ctx; 471 unsigned char *clienthello_hash; 472 unsigned int clienthello_hash_len; 473 474 } SSL_HANDSHAKE_TLS13; 475 476 struct tls12_record_layer; 477 478 struct tls12_record_layer *tls12_record_layer_new(void); 479 void tls12_record_layer_free(struct tls12_record_layer *rl); 480 void tls12_record_layer_set_version(struct tls12_record_layer *rl, 481 uint16_t version); 482 void tls12_record_layer_set_read_epoch(struct tls12_record_layer *rl, 483 uint16_t epoch); 484 void tls12_record_layer_set_write_epoch(struct tls12_record_layer *rl, 485 uint16_t epoch); 486 void tls12_record_layer_clear_read_state(struct tls12_record_layer *rl); 487 void tls12_record_layer_clear_write_state(struct tls12_record_layer *rl); 488 void tls12_record_layer_set_read_seq_num(struct tls12_record_layer *rl, 489 uint8_t *seq_num); 490 void tls12_record_layer_set_write_seq_num(struct tls12_record_layer *rl, 491 uint8_t *seq_num); 492 int tls12_record_layer_set_read_aead(struct tls12_record_layer *rl, 493 SSL_AEAD_CTX *aead_ctx); 494 int tls12_record_layer_set_write_aead(struct tls12_record_layer *rl, 495 SSL_AEAD_CTX *aead_ctx); 496 int tls12_record_layer_set_read_cipher_hash(struct tls12_record_layer *rl, 497 EVP_CIPHER_CTX *cipher_ctx, EVP_MD_CTX *hash_ctx, int stream_mac); 498 int tls12_record_layer_set_write_cipher_hash(struct tls12_record_layer *rl, 499 EVP_CIPHER_CTX *cipher_ctx, EVP_MD_CTX *hash_ctx, int stream_mac); 500 int tls12_record_layer_seal_record(struct tls12_record_layer *rl, 501 uint8_t content_type, const uint8_t *content, size_t content_len, 502 CBB *out); 503 504 typedef struct ssl_ctx_internal_st { 505 uint16_t min_version; 506 uint16_t max_version; 507 508 unsigned long options; 509 unsigned long mode; 510 511 /* If this callback is not null, it will be called each 512 * time a session id is added to the cache. If this function 513 * returns 1, it means that the callback will do a 514 * SSL_SESSION_free() when it has finished using it. Otherwise, 515 * on 0, it means the callback has finished with it. 516 * If remove_session_cb is not null, it will be called when 517 * a session-id is removed from the cache. After the call, 518 * OpenSSL will SSL_SESSION_free() it. */ 519 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess); 520 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess); 521 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, 522 const unsigned char *data, int len, int *copy); 523 524 /* if defined, these override the X509_verify_cert() calls */ 525 int (*app_verify_callback)(X509_STORE_CTX *, void *); 526 void *app_verify_arg; 527 528 /* get client cert callback */ 529 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey); 530 531 /* cookie generate callback */ 532 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 533 unsigned int *cookie_len); 534 535 /* verify cookie callback */ 536 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie, 537 unsigned int cookie_len); 538 539 void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */ 540 541 /* callback that allows applications to peek at protocol messages */ 542 void (*msg_callback)(int write_p, int version, int content_type, 543 const void *buf, size_t len, SSL *ssl, void *arg); 544 void *msg_callback_arg; 545 546 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ 547 548 /* Default generate session ID callback. */ 549 GEN_SESSION_CB generate_session_id; 550 551 /* TLS extensions servername callback */ 552 int (*tlsext_servername_callback)(SSL*, int *, void *); 553 void *tlsext_servername_arg; 554 555 /* Callback to support customisation of ticket key setting */ 556 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name, 557 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 558 559 /* certificate status request info */ 560 /* Callback for status request */ 561 int (*tlsext_status_cb)(SSL *ssl, void *arg); 562 void *tlsext_status_arg; 563 564 struct lhash_st_SSL_SESSION *sessions; 565 566 /* Most session-ids that will be cached, default is 567 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ 568 unsigned long session_cache_size; 569 struct ssl_session_st *session_cache_head; 570 struct ssl_session_st *session_cache_tail; 571 572 /* This can have one of 2 values, ored together, 573 * SSL_SESS_CACHE_CLIENT, 574 * SSL_SESS_CACHE_SERVER, 575 * Default is SSL_SESSION_CACHE_SERVER, which means only 576 * SSL_accept which cache SSL_SESSIONS. */ 577 int session_cache_mode; 578 579 struct { 580 int sess_connect; /* SSL new conn - started */ 581 int sess_connect_renegotiate;/* SSL reneg - requested */ 582 int sess_connect_good; /* SSL new conne/reneg - finished */ 583 int sess_accept; /* SSL new accept - started */ 584 int sess_accept_renegotiate;/* SSL reneg - requested */ 585 int sess_accept_good; /* SSL accept/reneg - finished */ 586 int sess_miss; /* session lookup misses */ 587 int sess_timeout; /* reuse attempt on timeouted session */ 588 int sess_cache_full; /* session removed due to full cache */ 589 int sess_hit; /* session reuse actually done */ 590 int sess_cb_hit; /* session-id that was not 591 * in the cache was 592 * passed back via the callback. This 593 * indicates that the application is 594 * supplying session-id's from other 595 * processes - spooky :-) */ 596 } stats; 597 598 CRYPTO_EX_DATA ex_data; 599 600 STACK_OF(SSL_CIPHER) *cipher_list_tls13; 601 602 struct cert_st /* CERT */ *cert; 603 604 /* Default values used when no per-SSL value is defined follow */ 605 606 /* what we put in client cert requests */ 607 STACK_OF(X509_NAME) *client_CA; 608 609 long max_cert_list; 610 611 int read_ahead; 612 613 int quiet_shutdown; 614 615 /* Maximum amount of data to send in one fragment. 616 * actual record size can be more than this due to 617 * padding and MAC overheads. 618 */ 619 unsigned int max_send_fragment; 620 621 #ifndef OPENSSL_NO_ENGINE 622 /* Engine to pass requests for client certs to 623 */ 624 ENGINE *client_cert_engine; 625 #endif 626 627 /* RFC 4507 session ticket keys */ 628 unsigned char tlsext_tick_key_name[16]; 629 unsigned char tlsext_tick_hmac_key[16]; 630 unsigned char tlsext_tick_aes_key[16]; 631 632 /* SRTP profiles we are willing to do from RFC 5764 */ 633 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 634 635 /* 636 * ALPN information. 637 */ 638 639 /* 640 * Server callback function that allows the server to select the 641 * protocol for the connection. 642 * out: on successful return, this must point to the raw protocol 643 * name (without the length prefix). 644 * outlen: on successful return, this contains the length of out. 645 * in: points to the client's list of supported protocols in 646 * wire-format. 647 * inlen: the length of in. 648 */ 649 int (*alpn_select_cb)(SSL *s, const unsigned char **out, 650 unsigned char *outlen, const unsigned char *in, unsigned int inlen, 651 void *arg); 652 void *alpn_select_cb_arg; 653 654 /* Client list of supported protocols in wire format. */ 655 unsigned char *alpn_client_proto_list; 656 unsigned int alpn_client_proto_list_len; 657 658 size_t tlsext_ecpointformatlist_length; 659 uint8_t *tlsext_ecpointformatlist; /* our list */ 660 size_t tlsext_supportedgroups_length; 661 uint16_t *tlsext_supportedgroups; /* our list */ 662 } SSL_CTX_INTERNAL; 663 664 typedef struct ssl_internal_st { 665 struct tls13_ctx *tls13; 666 667 uint16_t min_version; 668 uint16_t max_version; 669 670 unsigned long options; /* protocol behaviour */ 671 unsigned long mode; /* API behaviour */ 672 673 /* Client list of supported protocols in wire format. */ 674 unsigned char *alpn_client_proto_list; 675 unsigned int alpn_client_proto_list_len; 676 677 /* XXX Callbacks */ 678 679 /* true when we are actually in SSL_accept() or SSL_connect() */ 680 int in_handshake; 681 int (*handshake_func)(SSL *); 682 /* callback that allows applications to peek at protocol messages */ 683 void (*msg_callback)(int write_p, int version, int content_type, 684 const void *buf, size_t len, SSL *ssl, void *arg); 685 void *msg_callback_arg; 686 687 /* Default generate session ID callback. */ 688 GEN_SESSION_CB generate_session_id; 689 690 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ 691 692 void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */ 693 694 /* TLS extension debug callback */ 695 void (*tlsext_debug_cb)(SSL *s, int client_server, int type, 696 unsigned char *data, int len, void *arg); 697 void *tlsext_debug_arg; 698 699 /* TLS Session Ticket extension callback */ 700 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; 701 void *tls_session_ticket_ext_cb_arg; 702 703 /* TLS pre-shared secret session resumption */ 704 tls_session_secret_cb_fn tls_session_secret_cb; 705 void *tls_session_secret_cb_arg; 706 707 /* XXX non-callback */ 708 709 int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */ 710 711 /* This holds a variable that indicates what we were doing 712 * when a 0 or -1 is returned. This is needed for 713 * non-blocking IO so we know what request needs re-doing when 714 * in SSL_accept or SSL_connect */ 715 int rwstate; 716 717 /* Imagine that here's a boolean member "init" that is 718 * switched as soon as SSL_set_{accept/connect}_state 719 * is called for the first time, so that "state" and 720 * "handshake_func" are properly initialized. But as 721 * handshake_func is == 0 until then, we use this 722 * test instead of an "init" member. 723 */ 724 725 int new_session;/* Generate a new session or reuse an old one. 726 * NB: For servers, the 'new' session may actually be a previously 727 * cached session or even the previous session unless 728 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */ 729 int quiet_shutdown;/* don't send shutdown packets */ 730 int shutdown; /* we have shut things down, 0x01 sent, 0x02 731 * for received */ 732 BUF_MEM *init_buf; /* buffer used during init */ 733 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ 734 int init_num; /* amount read/written */ 735 int init_off; /* amount read/written */ 736 737 /* used internally to point at a raw packet */ 738 unsigned char *packet; 739 unsigned int packet_length; 740 741 int read_ahead; /* Read as many input bytes as possible 742 * (for non-blocking reads) */ 743 744 int hit; /* reusing a previous session */ 745 746 STACK_OF(SSL_CIPHER) *cipher_list_tls13; 747 748 /* These are the ones being used, the ones in SSL_SESSION are 749 * the ones to be 'copied' into these ones */ 750 int mac_flags; 751 752 SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then 753 enc_read_ctx and read_hash are 754 ignored. */ 755 756 SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then 757 enc_write_ctx and write_hash are 758 ignored. */ 759 760 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 761 EVP_MD_CTX *write_hash; /* used for mac generation */ 762 763 struct tls12_record_layer *rl; 764 765 /* session info */ 766 767 /* extra application data */ 768 CRYPTO_EX_DATA ex_data; 769 770 /* client cert? */ 771 /* for server side, keep the list of CA_dn we can use */ 772 STACK_OF(X509_NAME) *client_CA; 773 774 /* set this flag to 1 and a sleep(1) is put into all SSL_read() 775 * and SSL_write() calls, good for nbio debuging :-) */ 776 int debug; 777 long max_cert_list; 778 int first_packet; 779 780 /* Expect OCSP CertificateStatus message */ 781 int tlsext_status_expected; 782 /* OCSP status request only */ 783 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; 784 X509_EXTENSIONS *tlsext_ocsp_exts; 785 786 /* OCSP response received or to be sent */ 787 unsigned char *tlsext_ocsp_resp; 788 size_t tlsext_ocsp_resp_len; 789 790 /* RFC4507 session ticket expected to be received or sent */ 791 int tlsext_ticket_expected; 792 793 size_t tlsext_ecpointformatlist_length; 794 uint8_t *tlsext_ecpointformatlist; /* our list */ 795 size_t tlsext_supportedgroups_length; 796 uint16_t *tlsext_supportedgroups; /* our list */ 797 798 /* TLS Session Ticket extension override */ 799 TLS_SESSION_TICKET_EXT *tlsext_session_ticket; 800 801 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ 802 SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ 803 804 int renegotiate;/* 1 if we are renegotiating. 805 * 2 if we are a server and are inside a handshake 806 * (i.e. not just sending a HelloRequest) */ 807 808 int rstate; /* where we are when reading */ 809 810 int mac_packet; 811 812 int empty_record_count; 813 } SSL_INTERNAL; 814 815 typedef struct ssl3_record_internal_st { 816 int type; /* type of record */ 817 unsigned int length; /* How many bytes available */ 818 unsigned int padding_length; /* Number of padding bytes. */ 819 unsigned int off; /* read/write offset into 'buf' */ 820 unsigned char *data; /* pointer to the record data */ 821 unsigned char *input; /* where the decode bytes are */ 822 unsigned long epoch; /* epoch number, needed by DTLS1 */ 823 unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 824 } SSL3_RECORD_INTERNAL; 825 826 typedef struct ssl3_buffer_internal_st { 827 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 828 * see ssl3_setup_buffers() */ 829 size_t len; /* buffer size */ 830 int offset; /* where to 'copy from' */ 831 int left; /* how many bytes left */ 832 } SSL3_BUFFER_INTERNAL; 833 834 typedef struct ssl3_state_internal_st { 835 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 836 int read_mac_secret_size; 837 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 838 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 839 int write_mac_secret_size; 840 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 841 842 SSL3_BUFFER_INTERNAL rbuf; /* read IO goes into here */ 843 SSL3_BUFFER_INTERNAL wbuf; /* write IO goes into here */ 844 845 /* we allow one fatal and one warning alert to be outstanding, 846 * send close alert via the warning alert */ 847 int alert_dispatch; 848 unsigned char send_alert[2]; 849 850 /* flags for countermeasure against known-IV weakness */ 851 int need_empty_fragments; 852 int empty_fragment_done; 853 854 SSL3_RECORD_INTERNAL rrec; /* each decoded record goes in here */ 855 856 /* storage for Alert/Handshake protocol data received but not 857 * yet processed by ssl3_read_bytes: */ 858 unsigned char alert_fragment[2]; 859 unsigned int alert_fragment_len; 860 unsigned char handshake_fragment[4]; 861 unsigned int handshake_fragment_len; 862 863 /* partial write - check the numbers match */ 864 unsigned int wnum; /* number of bytes sent so far */ 865 int wpend_tot; /* number bytes written */ 866 int wpend_type; 867 int wpend_ret; /* number of bytes submitted */ 868 const unsigned char *wpend_buf; 869 870 /* Transcript of handshake messages that have been sent and received. */ 871 BUF_MEM *handshake_transcript; 872 873 /* Rolling hash of handshake messages. */ 874 EVP_MD_CTX *handshake_hash; 875 876 /* this is set whenerver we see a change_cipher_spec message 877 * come in when we are not looking for one */ 878 int change_cipher_spec; 879 880 int warn_alert; 881 int fatal_alert; 882 883 /* This flag is set when we should renegotiate ASAP, basically when 884 * there is no more data in the read or write buffers */ 885 int renegotiate; 886 int total_renegotiations; 887 int num_renegotiations; 888 889 int in_read_app_data; 890 891 SSL_HANDSHAKE hs; 892 SSL_HANDSHAKE_TLS13 hs_tls13; 893 894 struct { 895 int new_mac_secret_size; 896 897 /* actually only needs to be 16+20 */ 898 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 899 900 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 901 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 902 int finish_md_len; 903 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 904 int peer_finish_md_len; 905 906 unsigned long message_size; 907 int message_type; 908 909 DH *dh; 910 911 EC_KEY *ecdh; /* holds short lived ECDH key */ 912 int ecdh_nid; 913 914 uint8_t *x25519; 915 916 int reuse_message; 917 918 /* used for certificate requests */ 919 int cert_req; 920 int ctype_num; 921 char ctype[SSL3_CT_NUMBER]; 922 STACK_OF(X509_NAME) *ca_names; 923 924 const EVP_CIPHER *new_sym_enc; 925 const EVP_AEAD *new_aead; 926 const EVP_MD *new_hash; 927 int new_mac_pkey_type; 928 int cert_request; 929 } tmp; 930 931 /* Connection binding to prevent renegotiation attacks */ 932 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 933 unsigned char previous_client_finished_len; 934 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 935 unsigned char previous_server_finished_len; 936 int send_connection_binding; /* TODOEKR */ 937 938 /* Set if we saw a Renegotiation Indication extension from our peer. */ 939 int renegotiate_seen; 940 941 /* 942 * ALPN information. 943 * 944 * In a server these point to the selected ALPN protocol after the 945 * ClientHello has been processed. In a client these contain the 946 * protocol that the server selected once the ServerHello has been 947 * processed. 948 */ 949 unsigned char *alpn_selected; 950 size_t alpn_selected_len; 951 } SSL3_STATE_INTERNAL; 952 #define S3I(s) (s->s3->internal) 953 954 typedef struct dtls1_record_data_internal_st { 955 unsigned char *packet; 956 unsigned int packet_length; 957 SSL3_BUFFER_INTERNAL rbuf; 958 SSL3_RECORD_INTERNAL rrec; 959 } DTLS1_RECORD_DATA_INTERNAL; 960 961 typedef struct dtls1_state_internal_st { 962 unsigned int send_cookie; 963 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 964 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; 965 unsigned int cookie_len; 966 967 /* 968 * The current data and handshake epoch. This is initially 969 * undefined, and starts at zero once the initial handshake is 970 * completed 971 */ 972 unsigned short r_epoch; 973 unsigned short w_epoch; 974 975 /* records being received in the current epoch */ 976 DTLS1_BITMAP bitmap; 977 978 /* renegotiation starts a new set of sequence numbers */ 979 DTLS1_BITMAP next_bitmap; 980 981 /* handshake message numbers */ 982 unsigned short handshake_write_seq; 983 unsigned short next_handshake_write_seq; 984 985 unsigned short handshake_read_seq; 986 987 /* save last sequence number for retransmissions */ 988 unsigned char last_write_sequence[SSL3_SEQUENCE_SIZE]; 989 990 /* Received handshake records (processed and unprocessed) */ 991 record_pqueue unprocessed_rcds; 992 record_pqueue processed_rcds; 993 994 /* Buffered handshake messages */ 995 struct _pqueue *buffered_messages; 996 997 /* Buffered application records. 998 * Only for records between CCS and Finished 999 * to prevent either protocol violation or 1000 * unnecessary message loss. 1001 */ 1002 record_pqueue buffered_app_data; 1003 1004 /* Is set when listening for new connections with dtls1_listen() */ 1005 unsigned int listen; 1006 1007 unsigned int mtu; /* max DTLS packet size */ 1008 1009 struct hm_header_st w_msg_hdr; 1010 struct hm_header_st r_msg_hdr; 1011 1012 struct dtls1_timeout_st timeout; 1013 1014 /* storage for Alert/Handshake protocol data received but not 1015 * yet processed by ssl3_read_bytes: */ 1016 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; 1017 unsigned int alert_fragment_len; 1018 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; 1019 unsigned int handshake_fragment_len; 1020 1021 unsigned int retransmitting; 1022 unsigned int change_cipher_spec_ok; 1023 } DTLS1_STATE_INTERNAL; 1024 #define D1I(s) (s->d1->internal) 1025 1026 typedef struct cert_st { 1027 /* Current active set */ 1028 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array 1029 * Probably it would make more sense to store 1030 * an index, not a pointer. */ 1031 1032 /* The following masks are for the key and auth 1033 * algorithms that are supported by the certs below */ 1034 int valid; 1035 unsigned long mask_k; 1036 unsigned long mask_a; 1037 1038 DH *dh_tmp; 1039 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); 1040 int dh_tmp_auto; 1041 1042 CERT_PKEY pkeys[SSL_PKEY_NUM]; 1043 1044 int references; /* >1 only if SSL_copy_session_id is used */ 1045 } CERT; 1046 1047 1048 typedef struct sess_cert_st { 1049 STACK_OF(X509) *cert_chain; /* as received from peer */ 1050 1051 /* The 'peer_...' members are used only by clients. */ 1052 int peer_cert_type; 1053 1054 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ 1055 CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; 1056 /* Obviously we don't have the private keys of these, 1057 * so maybe we shouldn't even use the CERT_PKEY type here. */ 1058 1059 int peer_nid; 1060 DH *peer_dh_tmp; 1061 EC_KEY *peer_ecdh_tmp; 1062 uint8_t *peer_x25519_tmp; 1063 1064 int references; /* actually always 1 at the moment */ 1065 } SESS_CERT; 1066 1067 /*#define SSL_DEBUG */ 1068 /*#define RSA_DEBUG */ 1069 1070 typedef struct ssl3_enc_method { 1071 unsigned int enc_flags; 1072 } SSL3_ENC_METHOD; 1073 1074 /* 1075 * Flag values for enc_flags. 1076 */ 1077 1078 /* Uses explicit IV. */ 1079 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) 1080 1081 /* Uses signature algorithms extension. */ 1082 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 1083 1084 /* Uses SHA256 default PRF. */ 1085 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 1086 1087 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 1088 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 1089 1090 /* Allow TLS 1.3 ciphersuites only. */ 1091 #define SSL_ENC_FLAG_TLS1_3_CIPHERS (1 << 5) 1092 1093 /* 1094 * ssl_aead_ctx_st contains information about an AEAD that is being used to 1095 * encrypt an SSL connection. 1096 */ 1097 struct ssl_aead_ctx_st { 1098 EVP_AEAD_CTX ctx; 1099 /* 1100 * fixed_nonce contains any bytes of the nonce that are fixed for all 1101 * records. 1102 */ 1103 unsigned char fixed_nonce[12]; 1104 unsigned char fixed_nonce_len; 1105 unsigned char variable_nonce_len; 1106 unsigned char xor_fixed_nonce; 1107 unsigned char tag_len; 1108 /* 1109 * variable_nonce_in_record is non-zero if the variable nonce 1110 * for a record is included as a prefix before the ciphertext. 1111 */ 1112 char variable_nonce_in_record; 1113 }; 1114 1115 extern SSL_CIPHER ssl3_ciphers[]; 1116 1117 const char *ssl_version_string(int ver); 1118 int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1119 int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1120 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); 1121 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver, 1122 uint16_t *out_ver); 1123 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver, 1124 uint16_t *out_ver); 1125 int ssl_downgrade_max_version(SSL *s, uint16_t *max_ver); 1126 int ssl_cipher_in_list(STACK_OF(SSL_CIPHER) *ciphers, const SSL_CIPHER *cipher); 1127 int ssl_cipher_allowed_in_version_range(const SSL_CIPHER *cipher, 1128 uint16_t min_ver, uint16_t max_ver); 1129 1130 const SSL_METHOD *tls_legacy_method(void); 1131 const SSL_METHOD *tls_legacy_client_method(void); 1132 const SSL_METHOD *tls_legacy_server_method(void); 1133 1134 const SSL_METHOD *ssl_get_client_method(uint16_t version); 1135 const SSL_METHOD *ssl_get_server_method(uint16_t version); 1136 1137 extern SSL3_ENC_METHOD DTLSv1_enc_data; 1138 extern SSL3_ENC_METHOD TLSv1_enc_data; 1139 extern SSL3_ENC_METHOD TLSv1_1_enc_data; 1140 extern SSL3_ENC_METHOD TLSv1_2_enc_data; 1141 extern SSL3_ENC_METHOD TLSv1_3_enc_data; 1142 1143 void ssl_clear_cipher_state(SSL *s); 1144 void ssl_clear_cipher_read_state(SSL *s); 1145 void ssl_clear_cipher_write_state(SSL *s); 1146 int ssl_clear_bad_session(SSL *s); 1147 1148 CERT *ssl_cert_new(void); 1149 CERT *ssl_cert_dup(CERT *cert); 1150 void ssl_cert_free(CERT *c); 1151 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); 1152 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); 1153 int ssl_cert_add0_chain_cert(CERT *c, X509 *cert); 1154 int ssl_cert_add1_chain_cert(CERT *c, X509 *cert); 1155 1156 SESS_CERT *ssl_sess_cert_new(void); 1157 void ssl_sess_cert_free(SESS_CERT *sc); 1158 int ssl_get_new_session(SSL *s, int session); 1159 int ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block, 1160 int *alert); 1161 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 1162 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, 1163 int num); 1164 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); 1165 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 1166 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 1167 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) *tls13, 1168 const char *rule_str); 1169 int ssl_parse_ciphersuites(STACK_OF(SSL_CIPHER) **out_ciphers, const char *str); 1170 int ssl_merge_cipherlists(STACK_OF(SSL_CIPHER) *cipherlist, 1171 STACK_OF(SSL_CIPHER) *cipherlist_tls13, 1172 STACK_OF(SSL_CIPHER) **out_cipherlist); 1173 void ssl_update_cache(SSL *s, int mode); 1174 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 1175 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 1176 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 1177 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); 1178 1179 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 1180 int ssl_undefined_function(SSL *s); 1181 int ssl_undefined_void_function(void); 1182 int ssl_undefined_const_function(const SSL *s); 1183 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 1184 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, 1185 const struct ssl_sigalg **sap); 1186 DH *ssl_get_auto_dh(SSL *s); 1187 int ssl_cert_type(X509 *x, EVP_PKEY *pkey); 1188 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); 1189 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 1190 int ssl_has_ecc_ciphers(SSL *s); 1191 int ssl_verify_alarm_type(long type); 1192 1193 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); 1194 1195 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 1196 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 1197 int ssl3_send_server_certificate(SSL *s); 1198 int ssl3_send_newsession_ticket(SSL *s); 1199 int ssl3_send_cert_status(SSL *s); 1200 int ssl3_get_finished(SSL *s, int state_a, int state_b); 1201 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 1202 int ssl3_do_write(SSL *s, int type); 1203 int ssl3_send_alert(SSL *s, int level, int desc); 1204 int ssl3_get_req_cert_types(SSL *s, CBB *cbb); 1205 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1206 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); 1207 int ssl3_num_ciphers(void); 1208 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 1209 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 1210 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 1211 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 1212 int ssl3_renegotiate(SSL *ssl); 1213 1214 int ssl3_renegotiate_check(SSL *ssl); 1215 1216 int ssl3_dispatch_alert(SSL *s); 1217 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1218 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 1219 int ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk); 1220 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 1221 STACK_OF(SSL_CIPHER) *srvr); 1222 int ssl3_setup_buffers(SSL *s); 1223 int ssl3_setup_init_buffer(SSL *s); 1224 void ssl3_release_init_buffer(SSL *s); 1225 int ssl3_setup_read_buffer(SSL *s); 1226 int ssl3_setup_write_buffer(SSL *s); 1227 void ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b); 1228 void ssl3_release_read_buffer(SSL *s); 1229 void ssl3_release_write_buffer(SSL *s); 1230 int ssl3_new(SSL *s); 1231 void ssl3_free(SSL *s); 1232 int ssl3_accept(SSL *s); 1233 int ssl3_connect(SSL *s); 1234 int ssl3_read(SSL *s, void *buf, int len); 1235 int ssl3_peek(SSL *s, void *buf, int len); 1236 int ssl3_write(SSL *s, const void *buf, int len); 1237 int ssl3_shutdown(SSL *s); 1238 void ssl3_clear(SSL *s); 1239 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 1240 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 1241 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 1242 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 1243 int ssl3_pending(const SSL *s); 1244 1245 int ssl3_handshake_msg_hdr_len(SSL *s); 1246 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, 1247 uint8_t msg_type); 1248 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); 1249 int ssl3_handshake_write(SSL *s); 1250 int ssl3_record_write(SSL *s, int type); 1251 1252 void tls1_record_sequence_increment(unsigned char *seq); 1253 int ssl3_do_change_cipher_spec(SSL *ssl); 1254 1255 int dtls1_do_write(SSL *s, int type); 1256 int ssl3_packet_read(SSL *s, int plen); 1257 int ssl3_packet_extend(SSL *s, int plen); 1258 int ssl_server_legacy_first_packet(SSL *s); 1259 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1260 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 1261 unsigned int len); 1262 void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, 1263 unsigned long frag_off, unsigned long frag_len); 1264 void dtls1_set_message_header_int(SSL *s, unsigned char mt, 1265 unsigned long len, unsigned short seq_num, unsigned long frag_off, 1266 unsigned long frag_len); 1267 1268 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); 1269 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); 1270 1271 int dtls1_read_failed(SSL *s, int code); 1272 int dtls1_buffer_message(SSL *s, int ccs); 1273 int dtls1_retransmit_message(SSL *s, unsigned short seq, 1274 unsigned long frag_off, int *found); 1275 int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 1276 int dtls1_retransmit_buffered_messages(SSL *s); 1277 void dtls1_clear_record_buffer(SSL *s); 1278 int dtls1_get_message_header(unsigned char *data, 1279 struct hm_header_st *msg_hdr); 1280 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); 1281 void dtls1_reset_seq_numbers(SSL *s, int rw); 1282 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, 1283 unsigned short epoch); 1284 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); 1285 int dtls1_check_timeout_num(SSL *s); 1286 int dtls1_handle_timeout(SSL *s); 1287 const SSL_CIPHER *dtls1_get_cipher(unsigned int u); 1288 void dtls1_start_timer(SSL *s); 1289 void dtls1_stop_timer(SSL *s); 1290 int dtls1_is_timer_expired(SSL *s); 1291 void dtls1_double_timeout(SSL *s); 1292 unsigned int dtls1_min_mtu(void); 1293 1294 /* some client-only functions */ 1295 int dtls1_get_hello_verify(SSL *s); 1296 int ssl3_send_client_hello(SSL *s); 1297 int ssl3_get_server_hello(SSL *s); 1298 int ssl3_get_certificate_request(SSL *s); 1299 int ssl3_get_new_session_ticket(SSL *s); 1300 int ssl3_get_cert_status(SSL *s); 1301 int ssl3_get_server_done(SSL *s); 1302 int ssl3_send_client_verify(SSL *s); 1303 int ssl3_send_client_certificate(SSL *s); 1304 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 1305 int ssl3_send_client_key_exchange(SSL *s); 1306 int ssl3_get_server_key_exchange(SSL *s); 1307 int ssl3_get_server_certificate(SSL *s); 1308 int ssl3_check_cert_and_algorithm(SSL *s); 1309 int ssl3_check_finished(SSL *s); 1310 1311 /* some server-only functions */ 1312 int dtls1_send_hello_verify_request(SSL *s); 1313 int ssl3_get_client_hello(SSL *s); 1314 int ssl3_send_server_hello(SSL *s); 1315 int ssl3_send_hello_request(SSL *s); 1316 int ssl3_send_server_key_exchange(SSL *s); 1317 int ssl3_send_certificate_request(SSL *s); 1318 int ssl3_send_server_done(SSL *s); 1319 int ssl3_get_client_certificate(SSL *s); 1320 int ssl3_get_client_key_exchange(SSL *s); 1321 int ssl3_get_cert_verify(SSL *s); 1322 1323 int ssl_kex_dummy_ecdhe_x25519(EVP_PKEY *pkey); 1324 int ssl_kex_generate_ecdhe_ecp(EC_KEY *ecdh, int nid); 1325 int ssl_kex_public_ecdhe_ecp(EC_KEY *ecdh, CBB *cbb); 1326 int ssl_kex_peer_public_ecdhe_ecp(EC_KEY *ecdh, int nid, CBS *cbs); 1327 int ssl_kex_derive_ecdhe_ecp(EC_KEY *ecdh, EC_KEY *ecdh_peer, 1328 uint8_t **shared_key, size_t *shared_key_len); 1329 1330 int tls1_new(SSL *s); 1331 void tls1_free(SSL *s); 1332 void tls1_clear(SSL *s); 1333 1334 int dtls1_new(SSL *s); 1335 void dtls1_free(SSL *s); 1336 void dtls1_clear(SSL *s); 1337 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 1338 1339 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1340 int dtls1_get_record(SSL *s); 1341 int dtls1_dispatch_alert(SSL *s); 1342 1343 int ssl_init_wbio_buffer(SSL *s, int push); 1344 void ssl_free_wbio_buffer(SSL *s); 1345 1346 int tls1_transcript_hash_init(SSL *s); 1347 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); 1348 int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len, 1349 size_t *outlen); 1350 void tls1_transcript_hash_free(SSL *s); 1351 1352 int tls1_transcript_init(SSL *s); 1353 void tls1_transcript_free(SSL *s); 1354 void tls1_transcript_reset(SSL *s); 1355 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); 1356 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); 1357 void tls1_transcript_freeze(SSL *s); 1358 void tls1_transcript_unfreeze(SSL *s); 1359 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); 1360 1361 void tls1_cleanup_key_block(SSL *s); 1362 int tls1_change_cipher_state(SSL *s, int which); 1363 int tls1_setup_key_block(SSL *s); 1364 int tls1_enc(SSL *s, int snd); 1365 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); 1366 int tls1_mac(SSL *ssl, unsigned char *md, int snd); 1367 int tls1_generate_master_secret(SSL *s, unsigned char *out, 1368 unsigned char *p, int len); 1369 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1370 const char *label, size_t llen, const unsigned char *p, size_t plen, 1371 int use_context); 1372 int tls1_alert_code(int code); 1373 int ssl_ok(SSL *s); 1374 1375 int ssl_using_ecc_cipher(SSL *s); 1376 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 1377 1378 void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats, 1379 size_t *pformatslen); 1380 void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups, 1381 size_t *pgroupslen); 1382 1383 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, 1384 const int *groups, size_t ngroups); 1385 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, 1386 const char *groups); 1387 1388 int tls1_ec_curve_id2nid(const uint16_t curve_id); 1389 uint16_t tls1_ec_nid2curve_id(const int nid); 1390 int tls1_check_curve(SSL *s, const uint16_t group_id); 1391 int tls1_get_shared_curve(SSL *s); 1392 1393 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, 1394 size_t n, int *al); 1395 int ssl_check_clienthello_tlsext_early(SSL *s); 1396 int ssl_check_clienthello_tlsext_late(SSL *s); 1397 int ssl_check_serverhello_tlsext(SSL *s); 1398 1399 #define TLS1_TICKET_FATAL_ERROR -1 1400 #define TLS1_TICKET_NONE 0 1401 #define TLS1_TICKET_EMPTY 1 1402 #define TLS1_TICKET_NOT_DECRYPTED 2 1403 #define TLS1_TICKET_DECRYPTED 3 1404 1405 int tls1_process_ticket(SSL *s, CBS *ext_block, int *alert, SSL_SESSION **ret); 1406 1407 long ssl_get_algorithm2(SSL *s); 1408 1409 int tls1_check_ec_server_key(SSL *s); 1410 1411 /* s3_cbc.c */ 1412 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD_INTERNAL *rec, 1413 unsigned int md_size, unsigned int orig_len); 1414 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD_INTERNAL *rec, 1415 unsigned int block_size, unsigned int mac_size); 1416 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 1417 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 1418 size_t *md_out_size, const unsigned char header[13], 1419 const unsigned char *data, size_t data_plus_mac_size, 1420 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 1421 unsigned int mac_secret_length); 1422 int SSL_state_func_code(int _state); 1423 1424 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) 1425 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) 1426 void SSL_error_internal(const SSL *s, int r, char *f, int l); 1427 1428 #ifndef OPENSSL_NO_SRTP 1429 1430 int srtp_find_profile_by_name(char *profile_name, 1431 SRTP_PROTECTION_PROFILE **pptr, unsigned int len); 1432 int srtp_find_profile_by_num(unsigned int profile_num, 1433 SRTP_PROTECTION_PROFILE **pptr); 1434 1435 #endif /* OPENSSL_NO_SRTP */ 1436 1437 __END_HIDDEN_DECLS 1438 1439 #endif 1440