1 /* $OpenBSD: ssl_locl.h,v 1.245 2019/04/04 16:44:24 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 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 173 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 174 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 175 *((c)++)=(unsigned char)(((l) )&0xff)) 176 177 #define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ 178 *((c)++)=(unsigned char)(((l)>>48)&0xff), \ 179 *((c)++)=(unsigned char)(((l)>>40)&0xff), \ 180 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 181 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 182 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 183 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 184 *((c)++)=(unsigned char)(((l) )&0xff)) 185 186 #define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \ 187 c[1]=(unsigned char)(((s) )&0xff)),c+=2) 188 189 /* LOCAL STUFF */ 190 191 #define SSL_DECRYPT 0 192 #define SSL_ENCRYPT 1 193 194 /* 195 * Define the Bitmasks for SSL_CIPHER.algorithms. 196 * This bits are used packed as dense as possible. If new methods/ciphers 197 * etc will be added, the bits a likely to change, so this information 198 * is for internal library use only, even though SSL_CIPHER.algorithms 199 * can be publicly accessed. 200 * Use the according functions for cipher management instead. 201 * 202 * The bit mask handling in the selection and sorting scheme in 203 * ssl_create_cipher_list() has only limited capabilities, reflecting 204 * that the different entities within are mutually exclusive: 205 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 206 */ 207 208 /* Bits for algorithm_mkey (key exchange algorithm) */ 209 #define SSL_kRSA 0x00000001L /* RSA key exchange */ 210 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ 211 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ 212 #define SSL_kGOST 0x00000200L /* GOST key exchange */ 213 #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */ 214 215 /* Bits for algorithm_auth (server authentication) */ 216 #define SSL_aRSA 0x00000001L /* RSA auth */ 217 #define SSL_aDSS 0x00000002L /* DSS auth */ 218 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ 219 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ 220 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ 221 #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */ 222 223 /* Bits for algorithm_enc (symmetric encryption) */ 224 #define SSL_DES 0x00000001L 225 #define SSL_3DES 0x00000002L 226 #define SSL_RC4 0x00000004L 227 #define SSL_IDEA 0x00000008L 228 #define SSL_eNULL 0x00000010L 229 #define SSL_AES128 0x00000020L 230 #define SSL_AES256 0x00000040L 231 #define SSL_CAMELLIA128 0x00000080L 232 #define SSL_CAMELLIA256 0x00000100L 233 #define SSL_eGOST2814789CNT 0x00000200L 234 #define SSL_AES128GCM 0x00000400L 235 #define SSL_AES256GCM 0x00000800L 236 #define SSL_CHACHA20POLY1305 0x00001000L 237 238 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) 239 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 240 241 242 /* Bits for algorithm_mac (symmetric authentication) */ 243 244 #define SSL_MD5 0x00000001L 245 #define SSL_SHA1 0x00000002L 246 #define SSL_GOST94 0x00000004L 247 #define SSL_GOST89MAC 0x00000008L 248 #define SSL_SHA256 0x00000010L 249 #define SSL_SHA384 0x00000020L 250 /* Not a real MAC, just an indication it is part of cipher */ 251 #define SSL_AEAD 0x00000040L 252 #define SSL_STREEBOG256 0x00000080L 253 254 /* Bits for algorithm_ssl (protocol version) */ 255 #define SSL_SSLV3 0x00000002L 256 #define SSL_TLSV1 SSL_SSLV3 /* for now */ 257 #define SSL_TLSV1_2 0x00000004L 258 #define SSL_TLSV1_3 0x00000008L 259 260 261 /* Bits for algorithm2 (handshake digests and other extra flags) */ 262 263 #define SSL_HANDSHAKE_MAC_MASK 0xff0 264 #define SSL_HANDSHAKE_MAC_MD5 0x010 265 #define SSL_HANDSHAKE_MAC_SHA 0x020 266 #define SSL_HANDSHAKE_MAC_GOST94 0x040 267 #define SSL_HANDSHAKE_MAC_SHA256 0x080 268 #define SSL_HANDSHAKE_MAC_SHA384 0x100 269 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 270 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) 271 272 #define SSL3_CK_ID 0x03000000 273 #define SSL3_CK_VALUE_MASK 0x0000ffff 274 275 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) 276 277 #define TLS1_PRF_DGST_SHIFT 10 278 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) 279 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) 280 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) 281 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) 282 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) 283 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) 284 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) 285 286 /* 287 * Stream MAC for GOST ciphersuites from cryptopro draft 288 * (currently this also goes into algorithm2). 289 */ 290 #define TLS1_STREAM_MAC 0x04 291 292 /* 293 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that 294 * indicates that the variable part of the nonce is included as a prefix of 295 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) 296 */ 297 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) 298 299 /* 300 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce 301 * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD. 302 */ 303 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ 304 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) 305 306 /* 307 * Cipher strength information. 308 */ 309 #define SSL_STRONG_MASK 0x000001fcL 310 #define SSL_STRONG_NONE 0x00000004L 311 #define SSL_LOW 0x00000020L 312 #define SSL_MEDIUM 0x00000040L 313 #define SSL_HIGH 0x00000080L 314 315 /* 316 * The keylength (measured in RSA key bits, I guess) for temporary keys. 317 * Cipher argument is so that this can be variable in the future. 318 */ 319 #define SSL_C_PKEYLENGTH(c) 1024 320 321 /* Check if an SSL structure is using DTLS. */ 322 #define SSL_IS_DTLS(s) \ 323 (s->method->internal->version == DTLS1_VERSION) 324 325 /* See if we need explicit IV. */ 326 #define SSL_USE_EXPLICIT_IV(s) \ 327 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 328 329 /* See if we use signature algorithms extension. */ 330 #define SSL_USE_SIGALGS(s) \ 331 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 332 333 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 334 #define SSL_USE_TLS1_2_CIPHERS(s) \ 335 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 336 337 #define SSL_PKEY_RSA_ENC 0 338 #define SSL_PKEY_RSA_SIGN 1 339 #define SSL_PKEY_DH_RSA 2 340 #define SSL_PKEY_ECC 3 341 #define SSL_PKEY_GOST01 4 342 #define SSL_PKEY_NUM 5 343 344 #define SSL_MAX_EMPTY_RECORDS 32 345 346 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | 347 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) 348 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 349 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 350 * SSL_aRSA <- RSA_ENC | RSA_SIGN 351 * SSL_aDSS <- DSA_SIGN 352 */ 353 354 /* 355 #define CERT_INVALID 0 356 #define CERT_PUBLIC_KEY 1 357 #define CERT_PRIVATE_KEY 2 358 */ 359 360 /* From ECC-TLS draft, used in encoding the curve type in 361 * ECParameters 362 */ 363 #define EXPLICIT_PRIME_CURVE_TYPE 1 364 #define EXPLICIT_CHAR2_CURVE_TYPE 2 365 #define NAMED_CURVE_TYPE 3 366 367 typedef struct ssl_method_internal_st { 368 int version; 369 370 uint16_t min_version; 371 uint16_t max_version; 372 373 int (*ssl_new)(SSL *s); 374 void (*ssl_clear)(SSL *s); 375 void (*ssl_free)(SSL *s); 376 377 int (*ssl_accept)(SSL *s); 378 int (*ssl_connect)(SSL *s); 379 380 int (*ssl_renegotiate)(SSL *s); 381 int (*ssl_renegotiate_check)(SSL *s); 382 383 long (*ssl_get_message)(SSL *s, int st1, int stn, int mt, 384 long max, int *ok); 385 int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, 386 int len, int peek); 387 int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len); 388 389 const struct ssl_method_st *(*get_ssl_method)(int version); 390 391 long (*get_timeout)(void); 392 int (*ssl_version)(void); 393 394 struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 395 } SSL_METHOD_INTERNAL; 396 397 typedef struct ssl_session_internal_st { 398 CRYPTO_EX_DATA ex_data; /* application specific data */ 399 400 /* These are used to make removal of session-ids more 401 * efficient and to implement a maximum cache size. */ 402 struct ssl_session_st *prev, *next; 403 404 /* Used to indicate that session resumption is not allowed. 405 * Applications can also set this bit for a new session via 406 * not_resumable_session_cb to disable session caching and tickets. */ 407 int not_resumable; 408 409 /* The cert is the certificate used to establish this connection */ 410 struct sess_cert_st /* SESS_CERT */ *sess_cert; 411 412 size_t tlsext_ecpointformatlist_length; 413 uint8_t *tlsext_ecpointformatlist; /* peer's list */ 414 size_t tlsext_supportedgroups_length; 415 uint16_t *tlsext_supportedgroups; /* peer's list */ 416 } SSL_SESSION_INTERNAL; 417 #define SSI(s) (s->session->internal) 418 419 typedef struct ssl_handshake_st { 420 /* state contains one of the SSL3_ST_* values. */ 421 int state; 422 423 /* used when SSL_ST_FLUSH_DATA is entered */ 424 int next_state; 425 426 /* new_cipher is the cipher being negotiated in this handshake. */ 427 const SSL_CIPHER *new_cipher; 428 429 /* key_block is the record-layer key block for TLS 1.2 and earlier. */ 430 int key_block_len; 431 unsigned char *key_block; 432 433 /* Extensions seen in this handshake. */ 434 uint32_t extensions_seen; 435 436 /* sigalgs offered in this handshake in wire form */ 437 size_t sigalgs_len; 438 uint8_t *sigalgs; 439 } SSL_HANDSHAKE; 440 441 typedef struct ssl_handshake_tls13_st { 442 uint16_t min_version; 443 uint16_t max_version; 444 uint16_t version; 445 446 /* Version proposed by peer server. */ 447 uint16_t server_version; 448 449 /* X25519 key share. */ 450 uint8_t *x25519_public; 451 uint8_t *x25519_private; 452 uint8_t *x25519_peer_public; 453 454 struct tls13_secrets *secrets; 455 456 uint8_t *cookie; 457 size_t cookie_len; 458 459 /* Preserved transcript hash. */ 460 uint8_t transcript_hash[EVP_MAX_MD_SIZE]; 461 size_t transcript_hash_len; 462 } SSL_HANDSHAKE_TLS13; 463 464 typedef struct ssl_ctx_internal_st { 465 uint16_t min_version; 466 uint16_t max_version; 467 468 unsigned long options; 469 unsigned long mode; 470 471 /* If this callback is not null, it will be called each 472 * time a session id is added to the cache. If this function 473 * returns 1, it means that the callback will do a 474 * SSL_SESSION_free() when it has finished using it. Otherwise, 475 * on 0, it means the callback has finished with it. 476 * If remove_session_cb is not null, it will be called when 477 * a session-id is removed from the cache. After the call, 478 * OpenSSL will SSL_SESSION_free() it. */ 479 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess); 480 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess); 481 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, 482 const unsigned char *data, int len, int *copy); 483 484 /* if defined, these override the X509_verify_cert() calls */ 485 int (*app_verify_callback)(X509_STORE_CTX *, void *); 486 void *app_verify_arg; 487 488 /* get client cert callback */ 489 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey); 490 491 /* cookie generate callback */ 492 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 493 unsigned int *cookie_len); 494 495 /* verify cookie callback */ 496 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie, 497 unsigned int cookie_len); 498 499 void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */ 500 501 /* callback that allows applications to peek at protocol messages */ 502 void (*msg_callback)(int write_p, int version, int content_type, 503 const void *buf, size_t len, SSL *ssl, void *arg); 504 void *msg_callback_arg; 505 506 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */ 507 508 /* Default generate session ID callback. */ 509 GEN_SESSION_CB generate_session_id; 510 511 /* TLS extensions servername callback */ 512 int (*tlsext_servername_callback)(SSL*, int *, void *); 513 void *tlsext_servername_arg; 514 515 /* Callback to support customisation of ticket key setting */ 516 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name, 517 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 518 519 /* certificate status request info */ 520 /* Callback for status request */ 521 int (*tlsext_status_cb)(SSL *ssl, void *arg); 522 void *tlsext_status_arg; 523 524 struct lhash_st_SSL_SESSION *sessions; 525 526 /* Most session-ids that will be cached, default is 527 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */ 528 unsigned long session_cache_size; 529 struct ssl_session_st *session_cache_head; 530 struct ssl_session_st *session_cache_tail; 531 532 /* This can have one of 2 values, ored together, 533 * SSL_SESS_CACHE_CLIENT, 534 * SSL_SESS_CACHE_SERVER, 535 * Default is SSL_SESSION_CACHE_SERVER, which means only 536 * SSL_accept which cache SSL_SESSIONS. */ 537 int session_cache_mode; 538 539 struct { 540 int sess_connect; /* SSL new conn - started */ 541 int sess_connect_renegotiate;/* SSL reneg - requested */ 542 int sess_connect_good; /* SSL new conne/reneg - finished */ 543 int sess_accept; /* SSL new accept - started */ 544 int sess_accept_renegotiate;/* SSL reneg - requested */ 545 int sess_accept_good; /* SSL accept/reneg - finished */ 546 int sess_miss; /* session lookup misses */ 547 int sess_timeout; /* reuse attempt on timeouted session */ 548 int sess_cache_full; /* session removed due to full cache */ 549 int sess_hit; /* session reuse actually done */ 550 int sess_cb_hit; /* session-id that was not 551 * in the cache was 552 * passed back via the callback. This 553 * indicates that the application is 554 * supplying session-id's from other 555 * processes - spooky :-) */ 556 } stats; 557 558 CRYPTO_EX_DATA ex_data; 559 560 /* same cipher_list but sorted for lookup */ 561 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 562 563 struct cert_st /* CERT */ *cert; 564 565 /* Default values used when no per-SSL value is defined follow */ 566 567 /* what we put in client cert requests */ 568 STACK_OF(X509_NAME) *client_CA; 569 570 long max_cert_list; 571 572 int read_ahead; 573 574 int quiet_shutdown; 575 576 /* Maximum amount of data to send in one fragment. 577 * actual record size can be more than this due to 578 * padding and MAC overheads. 579 */ 580 unsigned int max_send_fragment; 581 582 #ifndef OPENSSL_NO_ENGINE 583 /* Engine to pass requests for client certs to 584 */ 585 ENGINE *client_cert_engine; 586 #endif 587 588 /* RFC 4507 session ticket keys */ 589 unsigned char tlsext_tick_key_name[16]; 590 unsigned char tlsext_tick_hmac_key[16]; 591 unsigned char tlsext_tick_aes_key[16]; 592 593 /* SRTP profiles we are willing to do from RFC 5764 */ 594 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 595 596 /* 597 * ALPN information. 598 */ 599 600 /* 601 * Server callback function that allows the server to select the 602 * protocol for the connection. 603 * out: on successful return, this must point to the raw protocol 604 * name (without the length prefix). 605 * outlen: on successful return, this contains the length of out. 606 * in: points to the client's list of supported protocols in 607 * wire-format. 608 * inlen: the length of in. 609 */ 610 int (*alpn_select_cb)(SSL *s, const unsigned char **out, 611 unsigned char *outlen, const unsigned char *in, unsigned int inlen, 612 void *arg); 613 void *alpn_select_cb_arg; 614 615 /* Client list of supported protocols in wire format. */ 616 unsigned char *alpn_client_proto_list; 617 unsigned int alpn_client_proto_list_len; 618 619 size_t tlsext_ecpointformatlist_length; 620 uint8_t *tlsext_ecpointformatlist; /* our list */ 621 size_t tlsext_supportedgroups_length; 622 uint16_t *tlsext_supportedgroups; /* our list */ 623 } SSL_CTX_INTERNAL; 624 625 typedef struct ssl_internal_st { 626 struct tls13_ctx *tls13; 627 628 uint16_t min_version; 629 uint16_t max_version; 630 631 unsigned long options; /* protocol behaviour */ 632 unsigned long mode; /* API behaviour */ 633 634 /* Client list of supported protocols in wire format. */ 635 unsigned char *alpn_client_proto_list; 636 unsigned int alpn_client_proto_list_len; 637 638 /* XXX Callbacks */ 639 640 /* true when we are actually in SSL_accept() or SSL_connect() */ 641 int in_handshake; 642 int (*handshake_func)(SSL *); 643 /* callback that allows applications to peek at protocol messages */ 644 void (*msg_callback)(int write_p, int version, int content_type, 645 const void *buf, size_t len, SSL *ssl, void *arg); 646 void *msg_callback_arg; 647 648 /* Default generate session ID callback. */ 649 GEN_SESSION_CB generate_session_id; 650 651 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */ 652 653 void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */ 654 655 /* TLS extension debug callback */ 656 void (*tlsext_debug_cb)(SSL *s, int client_server, int type, 657 unsigned char *data, int len, void *arg); 658 void *tlsext_debug_arg; 659 660 /* TLS Session Ticket extension callback */ 661 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb; 662 void *tls_session_ticket_ext_cb_arg; 663 664 /* TLS pre-shared secret session resumption */ 665 tls_session_secret_cb_fn tls_session_secret_cb; 666 void *tls_session_secret_cb_arg; 667 668 /* XXX non-callback */ 669 670 int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */ 671 672 /* This holds a variable that indicates what we were doing 673 * when a 0 or -1 is returned. This is needed for 674 * non-blocking IO so we know what request needs re-doing when 675 * in SSL_accept or SSL_connect */ 676 int rwstate; 677 678 /* Imagine that here's a boolean member "init" that is 679 * switched as soon as SSL_set_{accept/connect}_state 680 * is called for the first time, so that "state" and 681 * "handshake_func" are properly initialized. But as 682 * handshake_func is == 0 until then, we use this 683 * test instead of an "init" member. 684 */ 685 686 int new_session;/* Generate a new session or reuse an old one. 687 * NB: For servers, the 'new' session may actually be a previously 688 * cached session or even the previous session unless 689 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */ 690 int quiet_shutdown;/* don't send shutdown packets */ 691 int shutdown; /* we have shut things down, 0x01 sent, 0x02 692 * for received */ 693 BUF_MEM *init_buf; /* buffer used during init */ 694 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */ 695 int init_num; /* amount read/written */ 696 int init_off; /* amount read/written */ 697 698 /* used internally to point at a raw packet */ 699 unsigned char *packet; 700 unsigned int packet_length; 701 702 int read_ahead; /* Read as many input bytes as possible 703 * (for non-blocking reads) */ 704 705 int hit; /* reusing a previous session */ 706 707 /* crypto */ 708 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 709 710 /* These are the ones being used, the ones in SSL_SESSION are 711 * the ones to be 'copied' into these ones */ 712 int mac_flags; 713 714 SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then 715 enc_read_ctx and read_hash are 716 ignored. */ 717 718 SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then 719 enc_write_ctx and write_hash are 720 ignored. */ 721 722 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 723 EVP_MD_CTX *write_hash; /* used for mac generation */ 724 725 /* session info */ 726 727 /* extra application data */ 728 CRYPTO_EX_DATA ex_data; 729 730 /* client cert? */ 731 /* for server side, keep the list of CA_dn we can use */ 732 STACK_OF(X509_NAME) *client_CA; 733 734 /* set this flag to 1 and a sleep(1) is put into all SSL_read() 735 * and SSL_write() calls, good for nbio debuging :-) */ 736 int debug; 737 long max_cert_list; 738 int first_packet; 739 740 int servername_done; /* no further mod of servername 741 0 : call the servername extension callback. 742 1 : prepare 2, allow last ack just after in server callback. 743 2 : don't call servername callback, no ack in server hello 744 */ 745 746 /* Expect OCSP CertificateStatus message */ 747 int tlsext_status_expected; 748 /* OCSP status request only */ 749 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids; 750 X509_EXTENSIONS *tlsext_ocsp_exts; 751 /* OCSP response received or to be sent */ 752 unsigned char *tlsext_ocsp_resp; 753 int tlsext_ocsp_resplen; 754 755 /* RFC4507 session ticket expected to be received or sent */ 756 int tlsext_ticket_expected; 757 758 size_t tlsext_ecpointformatlist_length; 759 uint8_t *tlsext_ecpointformatlist; /* our list */ 760 size_t tlsext_supportedgroups_length; 761 uint16_t *tlsext_supportedgroups; /* our list */ 762 763 /* TLS Session Ticket extension override */ 764 TLS_SESSION_TICKET_EXT *tlsext_session_ticket; 765 766 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */ 767 SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */ 768 769 int renegotiate;/* 1 if we are renegotiating. 770 * 2 if we are a server and are inside a handshake 771 * (i.e. not just sending a HelloRequest) */ 772 773 int rstate; /* where we are when reading */ 774 775 int mac_packet; 776 777 int empty_record_count; 778 } SSL_INTERNAL; 779 780 typedef struct ssl3_state_internal_st { 781 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 782 int read_mac_secret_size; 783 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 784 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 785 int write_mac_secret_size; 786 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 787 788 SSL3_BUFFER rbuf; /* read IO goes into here */ 789 SSL3_BUFFER wbuf; /* write IO goes into here */ 790 791 /* we allow one fatal and one warning alert to be outstanding, 792 * send close alert via the warning alert */ 793 int alert_dispatch; 794 unsigned char send_alert[2]; 795 796 /* flags for countermeasure against known-IV weakness */ 797 int need_empty_fragments; 798 int empty_fragment_done; 799 800 SSL3_RECORD rrec; /* each decoded record goes in here */ 801 SSL3_RECORD wrec; /* goes out from here */ 802 803 /* storage for Alert/Handshake protocol data received but not 804 * yet processed by ssl3_read_bytes: */ 805 unsigned char alert_fragment[2]; 806 unsigned int alert_fragment_len; 807 unsigned char handshake_fragment[4]; 808 unsigned int handshake_fragment_len; 809 810 /* partial write - check the numbers match */ 811 unsigned int wnum; /* number of bytes sent so far */ 812 int wpend_tot; /* number bytes written */ 813 int wpend_type; 814 int wpend_ret; /* number of bytes submitted */ 815 const unsigned char *wpend_buf; 816 817 /* Transcript of handshake messages that have been sent and received. */ 818 BUF_MEM *handshake_transcript; 819 820 /* Rolling hash of handshake messages. */ 821 EVP_MD_CTX *handshake_hash; 822 823 /* this is set whenerver we see a change_cipher_spec message 824 * come in when we are not looking for one */ 825 int change_cipher_spec; 826 827 int warn_alert; 828 int fatal_alert; 829 830 /* This flag is set when we should renegotiate ASAP, basically when 831 * there is no more data in the read or write buffers */ 832 int renegotiate; 833 int total_renegotiations; 834 int num_renegotiations; 835 836 int in_read_app_data; 837 838 SSL_HANDSHAKE hs; 839 SSL_HANDSHAKE_TLS13 hs_tls13; 840 841 struct { 842 int new_mac_secret_size; 843 844 /* actually only needs to be 16+20 */ 845 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 846 847 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 848 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 849 int finish_md_len; 850 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 851 int peer_finish_md_len; 852 853 unsigned long message_size; 854 int message_type; 855 856 DH *dh; 857 858 EC_KEY *ecdh; /* holds short lived ECDH key */ 859 860 uint8_t *x25519; 861 862 int reuse_message; 863 864 /* used for certificate requests */ 865 int cert_req; 866 int ctype_num; 867 char ctype[SSL3_CT_NUMBER]; 868 STACK_OF(X509_NAME) *ca_names; 869 870 const EVP_CIPHER *new_sym_enc; 871 const EVP_AEAD *new_aead; 872 const EVP_MD *new_hash; 873 int new_mac_pkey_type; 874 int cert_request; 875 } tmp; 876 877 /* Connection binding to prevent renegotiation attacks */ 878 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 879 unsigned char previous_client_finished_len; 880 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 881 unsigned char previous_server_finished_len; 882 int send_connection_binding; /* TODOEKR */ 883 884 /* Set if we saw a Renegotiation Indication extension from our peer. */ 885 int renegotiate_seen; 886 887 /* 888 * ALPN information. 889 * 890 * In a server these point to the selected ALPN protocol after the 891 * ClientHello has been processed. In a client these contain the 892 * protocol that the server selected once the ServerHello has been 893 * processed. 894 */ 895 unsigned char *alpn_selected; 896 size_t alpn_selected_len; 897 } SSL3_STATE_INTERNAL; 898 #define S3I(s) (s->s3->internal) 899 900 typedef struct dtls1_state_internal_st { 901 unsigned int send_cookie; 902 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 903 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; 904 unsigned int cookie_len; 905 906 /* 907 * The current data and handshake epoch. This is initially 908 * undefined, and starts at zero once the initial handshake is 909 * completed 910 */ 911 unsigned short r_epoch; 912 unsigned short w_epoch; 913 914 /* records being received in the current epoch */ 915 DTLS1_BITMAP bitmap; 916 917 /* renegotiation starts a new set of sequence numbers */ 918 DTLS1_BITMAP next_bitmap; 919 920 /* handshake message numbers */ 921 unsigned short handshake_write_seq; 922 unsigned short next_handshake_write_seq; 923 924 unsigned short handshake_read_seq; 925 926 /* save last sequence number for retransmissions */ 927 unsigned char last_write_sequence[8]; 928 929 /* Received handshake records (processed and unprocessed) */ 930 record_pqueue unprocessed_rcds; 931 record_pqueue processed_rcds; 932 933 /* Buffered handshake messages */ 934 struct _pqueue *buffered_messages; 935 936 /* Buffered application records. 937 * Only for records between CCS and Finished 938 * to prevent either protocol violation or 939 * unnecessary message loss. 940 */ 941 record_pqueue buffered_app_data; 942 943 /* Is set when listening for new connections with dtls1_listen() */ 944 unsigned int listen; 945 946 unsigned int mtu; /* max DTLS packet size */ 947 948 struct hm_header_st w_msg_hdr; 949 struct hm_header_st r_msg_hdr; 950 951 struct dtls1_timeout_st timeout; 952 953 /* storage for Alert/Handshake protocol data received but not 954 * yet processed by ssl3_read_bytes: */ 955 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; 956 unsigned int alert_fragment_len; 957 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; 958 unsigned int handshake_fragment_len; 959 960 unsigned int retransmitting; 961 unsigned int change_cipher_spec_ok; 962 } DTLS1_STATE_INTERNAL; 963 #define D1I(s) (s->d1->internal) 964 965 typedef struct cert_pkey_st { 966 X509 *x509; 967 EVP_PKEY *privatekey; 968 STACK_OF(X509) *chain; 969 } CERT_PKEY; 970 971 typedef struct cert_st { 972 /* Current active set */ 973 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array 974 * Probably it would make more sense to store 975 * an index, not a pointer. */ 976 977 /* The following masks are for the key and auth 978 * algorithms that are supported by the certs below */ 979 int valid; 980 unsigned long mask_k; 981 unsigned long mask_a; 982 983 DH *dh_tmp; 984 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); 985 int dh_tmp_auto; 986 987 CERT_PKEY pkeys[SSL_PKEY_NUM]; 988 989 int references; /* >1 only if SSL_copy_session_id is used */ 990 } CERT; 991 992 993 typedef struct sess_cert_st { 994 STACK_OF(X509) *cert_chain; /* as received from peer */ 995 996 /* The 'peer_...' members are used only by clients. */ 997 int peer_cert_type; 998 999 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ 1000 CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; 1001 /* Obviously we don't have the private keys of these, 1002 * so maybe we shouldn't even use the CERT_PKEY type here. */ 1003 1004 DH *peer_dh_tmp; 1005 EC_KEY *peer_ecdh_tmp; 1006 uint8_t *peer_x25519_tmp; 1007 1008 int references; /* actually always 1 at the moment */ 1009 } SESS_CERT; 1010 1011 /*#define SSL_DEBUG */ 1012 /*#define RSA_DEBUG */ 1013 1014 typedef struct ssl3_enc_method { 1015 int (*enc)(SSL *, int); 1016 unsigned int enc_flags; 1017 } SSL3_ENC_METHOD; 1018 1019 /* 1020 * Flag values for enc_flags. 1021 */ 1022 1023 /* Uses explicit IV. */ 1024 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) 1025 1026 /* Uses signature algorithms extension. */ 1027 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 1028 1029 /* Uses SHA256 default PRF. */ 1030 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 1031 1032 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 1033 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 1034 1035 /* 1036 * ssl_aead_ctx_st contains information about an AEAD that is being used to 1037 * encrypt an SSL connection. 1038 */ 1039 struct ssl_aead_ctx_st { 1040 EVP_AEAD_CTX ctx; 1041 /* 1042 * fixed_nonce contains any bytes of the nonce that are fixed for all 1043 * records. 1044 */ 1045 unsigned char fixed_nonce[12]; 1046 unsigned char fixed_nonce_len; 1047 unsigned char variable_nonce_len; 1048 unsigned char xor_fixed_nonce; 1049 unsigned char tag_len; 1050 /* 1051 * variable_nonce_in_record is non-zero if the variable nonce 1052 * for a record is included as a prefix before the ciphertext. 1053 */ 1054 char variable_nonce_in_record; 1055 }; 1056 1057 extern SSL_CIPHER ssl3_ciphers[]; 1058 1059 const char *ssl_version_string(int ver); 1060 int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1061 int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver); 1062 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver); 1063 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver, 1064 uint16_t *out_ver); 1065 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver, 1066 uint16_t *out_ver); 1067 uint16_t ssl_max_server_version(SSL *s); 1068 int ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver, 1069 uint16_t max_ver); 1070 1071 const SSL_METHOD *tls_legacy_client_method(void); 1072 1073 const SSL_METHOD *dtls1_get_client_method(int ver); 1074 const SSL_METHOD *dtls1_get_server_method(int ver); 1075 const SSL_METHOD *tls1_get_client_method(int ver); 1076 const SSL_METHOD *tls1_get_server_method(int ver); 1077 1078 extern SSL3_ENC_METHOD DTLSv1_enc_data; 1079 extern SSL3_ENC_METHOD TLSv1_enc_data; 1080 extern SSL3_ENC_METHOD TLSv1_1_enc_data; 1081 extern SSL3_ENC_METHOD TLSv1_2_enc_data; 1082 1083 void ssl_clear_cipher_state(SSL *s); 1084 void ssl_clear_cipher_read_state(SSL *s); 1085 void ssl_clear_cipher_write_state(SSL *s); 1086 int ssl_clear_bad_session(SSL *s); 1087 1088 CERT *ssl_cert_new(void); 1089 CERT *ssl_cert_dup(CERT *cert); 1090 void ssl_cert_free(CERT *c); 1091 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); 1092 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); 1093 int ssl_cert_add0_chain_cert(CERT *c, X509 *cert); 1094 int ssl_cert_add1_chain_cert(CERT *c, X509 *cert); 1095 1096 SESS_CERT *ssl_sess_cert_new(void); 1097 void ssl_sess_cert_free(SESS_CERT *sc); 1098 int ssl_get_new_session(SSL *s, int session); 1099 int ssl_get_prev_session(SSL *s, const unsigned char *session_id, 1100 int session_id_len, CBS *ext_block); 1101 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 1102 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, 1103 int num); 1104 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1105 const SSL_CIPHER * const *bp); 1106 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb); 1107 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs); 1108 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 1109 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted, 1110 const char *rule_str); 1111 void ssl_update_cache(SSL *s, int mode); 1112 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 1113 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 1114 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 1115 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md); 1116 1117 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 1118 int ssl_undefined_function(SSL *s); 1119 int ssl_undefined_void_function(void); 1120 int ssl_undefined_const_function(const SSL *s); 1121 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 1122 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd, 1123 const struct ssl_sigalg **sap); 1124 DH *ssl_get_auto_dh(SSL *s); 1125 int ssl_cert_type(X509 *x, EVP_PKEY *pkey); 1126 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); 1127 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 1128 int ssl_has_ecc_ciphers(SSL *s); 1129 int ssl_verify_alarm_type(long type); 1130 1131 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len); 1132 1133 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 1134 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 1135 int ssl3_send_server_certificate(SSL *s); 1136 int ssl3_send_newsession_ticket(SSL *s); 1137 int ssl3_send_cert_status(SSL *s); 1138 int ssl3_get_finished(SSL *s, int state_a, int state_b); 1139 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 1140 int ssl3_do_write(SSL *s, int type); 1141 int ssl3_send_alert(SSL *s, int level, int desc); 1142 int ssl3_get_req_cert_types(SSL *s, CBB *cbb); 1143 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1144 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); 1145 int ssl3_num_ciphers(void); 1146 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 1147 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 1148 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 1149 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 1150 int ssl3_renegotiate(SSL *ssl); 1151 1152 int ssl3_renegotiate_check(SSL *ssl); 1153 1154 int ssl3_dispatch_alert(SSL *s); 1155 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1156 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 1157 int ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk); 1158 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 1159 STACK_OF(SSL_CIPHER) *srvr); 1160 int ssl3_setup_buffers(SSL *s); 1161 int ssl3_setup_init_buffer(SSL *s); 1162 int ssl3_setup_read_buffer(SSL *s); 1163 int ssl3_setup_write_buffer(SSL *s); 1164 int ssl3_release_read_buffer(SSL *s); 1165 int ssl3_release_write_buffer(SSL *s); 1166 int ssl3_new(SSL *s); 1167 void ssl3_free(SSL *s); 1168 int ssl3_accept(SSL *s); 1169 int ssl3_connect(SSL *s); 1170 int ssl3_read(SSL *s, void *buf, int len); 1171 int ssl3_peek(SSL *s, void *buf, int len); 1172 int ssl3_write(SSL *s, const void *buf, int len); 1173 int ssl3_shutdown(SSL *s); 1174 void ssl3_clear(SSL *s); 1175 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 1176 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 1177 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 1178 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 1179 int ssl3_pending(const SSL *s); 1180 1181 int ssl3_handshake_msg_hdr_len(SSL *s); 1182 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, 1183 uint8_t msg_type); 1184 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake); 1185 int ssl3_handshake_write(SSL *s); 1186 int ssl3_record_write(SSL *s, int type); 1187 1188 void tls1_record_sequence_increment(unsigned char *seq); 1189 int ssl3_do_change_cipher_spec(SSL *ssl); 1190 1191 long tls1_default_timeout(void); 1192 int dtls1_do_write(SSL *s, int type); 1193 int ssl3_packet_read(SSL *s, int plen); 1194 int ssl3_packet_extend(SSL *s, int plen); 1195 int ssl_server_legacy_first_packet(SSL *s); 1196 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 1197 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 1198 unsigned int len); 1199 void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len, 1200 unsigned long frag_off, unsigned long frag_len); 1201 void dtls1_set_message_header_int(SSL *s, unsigned char mt, 1202 unsigned long len, unsigned short seq_num, unsigned long frag_off, 1203 unsigned long frag_len); 1204 1205 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); 1206 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); 1207 1208 int dtls1_read_failed(SSL *s, int code); 1209 int dtls1_buffer_message(SSL *s, int ccs); 1210 int dtls1_retransmit_message(SSL *s, unsigned short seq, 1211 unsigned long frag_off, int *found); 1212 int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 1213 int dtls1_retransmit_buffered_messages(SSL *s); 1214 void dtls1_clear_record_buffer(SSL *s); 1215 int dtls1_get_message_header(unsigned char *data, 1216 struct hm_header_st *msg_hdr); 1217 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); 1218 void dtls1_reset_seq_numbers(SSL *s, int rw); 1219 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, 1220 unsigned short epoch); 1221 long dtls1_default_timeout(void); 1222 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); 1223 int dtls1_check_timeout_num(SSL *s); 1224 int dtls1_handle_timeout(SSL *s); 1225 const SSL_CIPHER *dtls1_get_cipher(unsigned int u); 1226 void dtls1_start_timer(SSL *s); 1227 void dtls1_stop_timer(SSL *s); 1228 int dtls1_is_timer_expired(SSL *s); 1229 void dtls1_double_timeout(SSL *s); 1230 unsigned int dtls1_min_mtu(void); 1231 1232 /* some client-only functions */ 1233 int dtls1_get_hello_verify(SSL *s); 1234 int ssl3_send_client_hello(SSL *s); 1235 int ssl3_get_server_hello(SSL *s); 1236 int ssl3_get_certificate_request(SSL *s); 1237 int ssl3_get_new_session_ticket(SSL *s); 1238 int ssl3_get_cert_status(SSL *s); 1239 int ssl3_get_server_done(SSL *s); 1240 int ssl3_send_client_verify(SSL *s); 1241 int ssl3_send_client_certificate(SSL *s); 1242 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 1243 int ssl3_send_client_key_exchange(SSL *s); 1244 int ssl3_get_server_key_exchange(SSL *s); 1245 int ssl3_get_server_certificate(SSL *s); 1246 int ssl3_check_cert_and_algorithm(SSL *s); 1247 int ssl3_check_finished(SSL *s); 1248 1249 /* some server-only functions */ 1250 int dtls1_send_hello_verify_request(SSL *s); 1251 int ssl3_get_client_hello(SSL *s); 1252 int ssl3_send_server_hello(SSL *s); 1253 int ssl3_send_hello_request(SSL *s); 1254 int ssl3_send_server_key_exchange(SSL *s); 1255 int ssl3_send_certificate_request(SSL *s); 1256 int ssl3_send_server_done(SSL *s); 1257 int ssl3_get_client_certificate(SSL *s); 1258 int ssl3_get_client_key_exchange(SSL *s); 1259 int ssl3_get_cert_verify(SSL *s); 1260 1261 int tls1_new(SSL *s); 1262 void tls1_free(SSL *s); 1263 void tls1_clear(SSL *s); 1264 1265 int dtls1_new(SSL *s); 1266 void dtls1_free(SSL *s); 1267 void dtls1_clear(SSL *s); 1268 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 1269 1270 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 1271 int dtls1_get_record(SSL *s); 1272 int dtls1_dispatch_alert(SSL *s); 1273 int dtls1_enc(SSL *s, int snd); 1274 1275 int ssl_init_wbio_buffer(SSL *s, int push); 1276 void ssl_free_wbio_buffer(SSL *s); 1277 1278 int tls1_transcript_hash_init(SSL *s); 1279 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len); 1280 int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len, 1281 size_t *outlen); 1282 void tls1_transcript_hash_free(SSL *s); 1283 1284 int tls1_transcript_init(SSL *s); 1285 void tls1_transcript_free(SSL *s); 1286 void tls1_transcript_reset(SSL *s); 1287 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len); 1288 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len); 1289 void tls1_transcript_freeze(SSL *s); 1290 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len); 1291 1292 void tls1_cleanup_key_block(SSL *s); 1293 int tls1_change_cipher_state(SSL *s, int which); 1294 int tls1_setup_key_block(SSL *s); 1295 int tls1_enc(SSL *s, int snd); 1296 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); 1297 int tls1_mac(SSL *ssl, unsigned char *md, int snd); 1298 int tls1_generate_master_secret(SSL *s, unsigned char *out, 1299 unsigned char *p, int len); 1300 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1301 const char *label, size_t llen, const unsigned char *p, size_t plen, 1302 int use_context); 1303 int tls1_alert_code(int code); 1304 int ssl_ok(SSL *s); 1305 1306 int ssl_using_ecc_cipher(SSL *s); 1307 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 1308 1309 void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats, 1310 size_t *pformatslen); 1311 void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups, 1312 size_t *pgroupslen); 1313 1314 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len, 1315 const int *groups, size_t ngroups); 1316 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len, 1317 const char *groups); 1318 1319 int tls1_ec_curve_id2nid(const uint16_t curve_id); 1320 uint16_t tls1_ec_nid2curve_id(const int nid); 1321 int tls1_check_curve(SSL *s, const uint16_t group_id); 1322 int tls1_get_shared_curve(SSL *s); 1323 1324 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, 1325 size_t n, int *al); 1326 int ssl_check_clienthello_tlsext_early(SSL *s); 1327 int ssl_check_clienthello_tlsext_late(SSL *s); 1328 int ssl_check_serverhello_tlsext(SSL *s); 1329 1330 #define tlsext_tick_md EVP_sha256 1331 int tls1_process_ticket(SSL *s, const unsigned char *session_id, 1332 int session_id_len, CBS *ext_block, SSL_SESSION **ret); 1333 1334 long ssl_get_algorithm2(SSL *s); 1335 1336 int tls1_check_ec_server_key(SSL *s); 1337 1338 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, 1339 int *len, int maxlen); 1340 int ssl_parse_clienthello_use_srtp_ext(SSL *s, const unsigned char *d, 1341 int len, int *al); 1342 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, 1343 int *len, int maxlen); 1344 int ssl_parse_serverhello_use_srtp_ext(SSL *s, const unsigned char *d, 1345 int len, int *al); 1346 1347 /* s3_cbc.c */ 1348 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD *rec, 1349 unsigned md_size, unsigned orig_len); 1350 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec, 1351 unsigned block_size, unsigned mac_size); 1352 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 1353 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 1354 size_t *md_out_size, const unsigned char header[13], 1355 const unsigned char *data, size_t data_plus_mac_size, 1356 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 1357 unsigned mac_secret_length); 1358 int SSL_state_func_code(int _state); 1359 1360 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__) 1361 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__) 1362 void SSL_error_internal(const SSL *s, int r, char *f, int l); 1363 1364 #ifndef OPENSSL_NO_SRTP 1365 1366 int srtp_find_profile_by_name(char *profile_name, 1367 SRTP_PROTECTION_PROFILE **pptr, unsigned len); 1368 int srtp_find_profile_by_num(unsigned profile_num, 1369 SRTP_PROTECTION_PROFILE **pptr); 1370 1371 #endif /* OPENSSL_NO_SRTP */ 1372 1373 __END_HIDDEN_DECLS 1374 1375 #endif 1376