1 /* 2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. 3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved 4 * Copyright 2005 Nokia. All rights reserved. 5 * 6 * Licensed under the OpenSSL license (the "License"). You may not use 7 * this file except in compliance with the License. You can obtain a copy 8 * in the file LICENSE in the source distribution or at 9 * https://www.openssl.org/source/license.html 10 */ 11 12 #ifndef OSSL_SSL_LOCAL_H 13 # define OSSL_SSL_LOCAL_H 14 15 # include "e_os.h" /* struct timeval for DTLS */ 16 # include <stdlib.h> 17 # include <time.h> 18 # include <string.h> 19 # include <errno.h> 20 21 # include <openssl/buffer.h> 22 # include <openssl/comp.h> 23 # include <openssl/bio.h> 24 # include <openssl/rsa.h> 25 # include <openssl/dsa.h> 26 # include <openssl/err.h> 27 # include <openssl/ssl.h> 28 # include <openssl/async.h> 29 # include <openssl/symhacks.h> 30 # include <openssl/ct.h> 31 # include "record/record.h" 32 # include "statem/statem.h" 33 # include "packet_local.h" 34 # include "internal/dane.h" 35 # include "internal/refcount.h" 36 # include "internal/tsan_assist.h" 37 # include "internal/bio.h" 38 # include "internal/ktls.h" 39 40 # ifdef OPENSSL_BUILD_SHLIBSSL 41 # undef OPENSSL_EXTERN 42 # define OPENSSL_EXTERN OPENSSL_EXPORT 43 # endif 44 45 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ 46 l|=(((unsigned long)(*((c)++)))<< 8), \ 47 l|=(((unsigned long)(*((c)++)))<<16), \ 48 l|=(((unsigned long)(*((c)++)))<<24)) 49 50 /* NOTE - c is not incremented as per c2l */ 51 # define c2ln(c,l1,l2,n) { \ 52 c+=n; \ 53 l1=l2=0; \ 54 switch (n) { \ 55 case 8: l2 =((unsigned long)(*(--(c))))<<24; \ 56 case 7: l2|=((unsigned long)(*(--(c))))<<16; \ 57 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ 58 case 5: l2|=((unsigned long)(*(--(c)))); \ 59 case 4: l1 =((unsigned long)(*(--(c))))<<24; \ 60 case 3: l1|=((unsigned long)(*(--(c))))<<16; \ 61 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ 62 case 1: l1|=((unsigned long)(*(--(c)))); \ 63 } \ 64 } 65 66 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 67 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 68 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 69 *((c)++)=(unsigned char)(((l)>>24)&0xff)) 70 71 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ 72 l|=((unsigned long)(*((c)++)))<<16, \ 73 l|=((unsigned long)(*((c)++)))<< 8, \ 74 l|=((unsigned long)(*((c)++)))) 75 76 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \ 77 l|=((uint64_t)(*((c)++)))<<48, \ 78 l|=((uint64_t)(*((c)++)))<<40, \ 79 l|=((uint64_t)(*((c)++)))<<32, \ 80 l|=((uint64_t)(*((c)++)))<<24, \ 81 l|=((uint64_t)(*((c)++)))<<16, \ 82 l|=((uint64_t)(*((c)++)))<< 8, \ 83 l|=((uint64_t)(*((c)++)))) 84 85 86 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 87 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 88 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 89 *((c)++)=(unsigned char)(((l) )&0xff)) 90 91 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \ 92 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 93 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 94 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 95 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 96 *((c)++)=(unsigned char)(((l) )&0xff)) 97 98 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ 99 *((c)++)=(unsigned char)(((l)>>48)&0xff), \ 100 *((c)++)=(unsigned char)(((l)>>40)&0xff), \ 101 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 102 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 103 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 104 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 105 *((c)++)=(unsigned char)(((l) )&0xff)) 106 107 /* NOTE - c is not incremented as per l2c */ 108 # define l2cn(l1,l2,c,n) { \ 109 c+=n; \ 110 switch (n) { \ 111 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 112 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 113 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 114 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 115 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 116 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 117 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 118 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 119 } \ 120 } 121 122 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \ 123 (((unsigned int)((c)[1])) )),(c)+=2) 124 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \ 125 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2) 126 127 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \ 128 (((unsigned long)((c)[1]))<< 8)| \ 129 (((unsigned long)((c)[2])) )),(c)+=3) 130 131 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \ 132 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \ 133 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3) 134 135 /* 136 * DTLS version numbers are strange because they're inverted. Except for 137 * DTLS1_BAD_VER, which should be considered "lower" than the rest. 138 */ 139 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1)) 140 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2)) 141 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2)) 142 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2)) 143 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2)) 144 145 146 /* 147 * Define the Bitmasks for SSL_CIPHER.algorithms. 148 * This bits are used packed as dense as possible. If new methods/ciphers 149 * etc will be added, the bits a likely to change, so this information 150 * is for internal library use only, even though SSL_CIPHER.algorithms 151 * can be publicly accessed. 152 * Use the according functions for cipher management instead. 153 * 154 * The bit mask handling in the selection and sorting scheme in 155 * ssl_create_cipher_list() has only limited capabilities, reflecting 156 * that the different entities within are mutually exclusive: 157 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 158 */ 159 160 /* Bits for algorithm_mkey (key exchange algorithm) */ 161 /* RSA key exchange */ 162 # define SSL_kRSA 0x00000001U 163 /* tmp DH key no DH cert */ 164 # define SSL_kDHE 0x00000002U 165 /* synonym */ 166 # define SSL_kEDH SSL_kDHE 167 /* ephemeral ECDH */ 168 # define SSL_kECDHE 0x00000004U 169 /* synonym */ 170 # define SSL_kEECDH SSL_kECDHE 171 /* PSK */ 172 # define SSL_kPSK 0x00000008U 173 /* GOST key exchange */ 174 # define SSL_kGOST 0x00000010U 175 /* SRP */ 176 # define SSL_kSRP 0x00000020U 177 178 # define SSL_kRSAPSK 0x00000040U 179 # define SSL_kECDHEPSK 0x00000080U 180 # define SSL_kDHEPSK 0x00000100U 181 182 /* all PSK */ 183 184 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK) 185 186 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */ 187 # define SSL_kANY 0x00000000U 188 189 /* Bits for algorithm_auth (server authentication) */ 190 /* RSA auth */ 191 # define SSL_aRSA 0x00000001U 192 /* DSS auth */ 193 # define SSL_aDSS 0x00000002U 194 /* no auth (i.e. use ADH or AECDH) */ 195 # define SSL_aNULL 0x00000004U 196 /* ECDSA auth*/ 197 # define SSL_aECDSA 0x00000008U 198 /* PSK auth */ 199 # define SSL_aPSK 0x00000010U 200 /* GOST R 34.10-2001 signature auth */ 201 # define SSL_aGOST01 0x00000020U 202 /* SRP auth */ 203 # define SSL_aSRP 0x00000040U 204 /* GOST R 34.10-2012 signature auth */ 205 # define SSL_aGOST12 0x00000080U 206 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */ 207 # define SSL_aANY 0x00000000U 208 /* All bits requiring a certificate */ 209 #define SSL_aCERT \ 210 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12) 211 212 /* Bits for algorithm_enc (symmetric encryption) */ 213 # define SSL_DES 0x00000001U 214 # define SSL_3DES 0x00000002U 215 # define SSL_RC4 0x00000004U 216 # define SSL_RC2 0x00000008U 217 # define SSL_IDEA 0x00000010U 218 # define SSL_eNULL 0x00000020U 219 # define SSL_AES128 0x00000040U 220 # define SSL_AES256 0x00000080U 221 # define SSL_CAMELLIA128 0x00000100U 222 # define SSL_CAMELLIA256 0x00000200U 223 # define SSL_eGOST2814789CNT 0x00000400U 224 # define SSL_SEED 0x00000800U 225 # define SSL_AES128GCM 0x00001000U 226 # define SSL_AES256GCM 0x00002000U 227 # define SSL_AES128CCM 0x00004000U 228 # define SSL_AES256CCM 0x00008000U 229 # define SSL_AES128CCM8 0x00010000U 230 # define SSL_AES256CCM8 0x00020000U 231 # define SSL_eGOST2814789CNT12 0x00040000U 232 # define SSL_CHACHA20POLY1305 0x00080000U 233 # define SSL_ARIA128GCM 0x00100000U 234 # define SSL_ARIA256GCM 0x00200000U 235 236 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM) 237 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8) 238 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM) 239 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 240 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305) 241 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM) 242 # define SSL_ARIA (SSL_ARIAGCM) 243 244 /* Bits for algorithm_mac (symmetric authentication) */ 245 246 # define SSL_MD5 0x00000001U 247 # define SSL_SHA1 0x00000002U 248 # define SSL_GOST94 0x00000004U 249 # define SSL_GOST89MAC 0x00000008U 250 # define SSL_SHA256 0x00000010U 251 # define SSL_SHA384 0x00000020U 252 /* Not a real MAC, just an indication it is part of cipher */ 253 # define SSL_AEAD 0x00000040U 254 # define SSL_GOST12_256 0x00000080U 255 # define SSL_GOST89MAC12 0x00000100U 256 # define SSL_GOST12_512 0x00000200U 257 258 /* 259 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make 260 * sure to update this constant too 261 */ 262 263 # define SSL_MD_MD5_IDX 0 264 # define SSL_MD_SHA1_IDX 1 265 # define SSL_MD_GOST94_IDX 2 266 # define SSL_MD_GOST89MAC_IDX 3 267 # define SSL_MD_SHA256_IDX 4 268 # define SSL_MD_SHA384_IDX 5 269 # define SSL_MD_GOST12_256_IDX 6 270 # define SSL_MD_GOST89MAC12_IDX 7 271 # define SSL_MD_GOST12_512_IDX 8 272 # define SSL_MD_MD5_SHA1_IDX 9 273 # define SSL_MD_SHA224_IDX 10 274 # define SSL_MD_SHA512_IDX 11 275 # define SSL_MAX_DIGEST 12 276 277 /* Bits for algorithm2 (handshake digests and other extra flags) */ 278 279 /* Bits 0-7 are handshake MAC */ 280 # define SSL_HANDSHAKE_MAC_MASK 0xFF 281 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX 282 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX 283 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX 284 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX 285 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX 286 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX 287 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1 288 289 /* Bits 8-15 bits are PRF */ 290 # define TLS1_PRF_DGST_SHIFT 8 291 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 292 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT) 293 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT) 294 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT) 295 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT) 296 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT) 297 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 298 299 /* 300 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also 301 * goes into algorithm2) 302 */ 303 # define TLS1_STREAM_MAC 0x10000 304 305 # define SSL_STRONG_MASK 0x0000001FU 306 # define SSL_DEFAULT_MASK 0X00000020U 307 308 # define SSL_STRONG_NONE 0x00000001U 309 # define SSL_LOW 0x00000002U 310 # define SSL_MEDIUM 0x00000004U 311 # define SSL_HIGH 0x00000008U 312 # define SSL_FIPS 0x00000010U 313 # define SSL_NOT_DEFAULT 0x00000020U 314 315 /* we have used 0000003f - 26 bits left to go */ 316 317 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */ 318 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000 319 320 /* Check if an SSL structure is using DTLS */ 321 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) 322 323 /* Check if we are using TLSv1.3 */ 324 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \ 325 && (s)->method->version >= TLS1_3_VERSION \ 326 && (s)->method->version != TLS_ANY_VERSION) 327 328 # define SSL_TREAT_AS_TLS13(s) \ 329 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \ 330 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \ 331 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ 332 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \ 333 || (s)->hello_retry_request == SSL_HRR_PENDING) 334 335 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \ 336 || (s)->s3->tmp.peer_finish_md_len == 0) 337 338 /* See if we need explicit IV */ 339 # define SSL_USE_EXPLICIT_IV(s) \ 340 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 341 /* 342 * See if we use signature algorithms extension and signature algorithm 343 * before signatures. 344 */ 345 # define SSL_USE_SIGALGS(s) \ 346 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 347 /* 348 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 349 * apply to others in future. 350 */ 351 # define SSL_USE_TLS1_2_CIPHERS(s) \ 352 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 353 /* 354 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method 355 * flags because it may not be set to correct version yet. 356 */ 357 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ 358 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \ 359 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION))) 360 /* 361 * Determine if a client should send signature algorithms extension: 362 * as with TLS1.2 cipher we can't rely on method flags. 363 */ 364 # define SSL_CLIENT_USE_SIGALGS(s) \ 365 SSL_CLIENT_USE_TLS1_2_CIPHERS(s) 366 367 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \ 368 (((value) >= TLSEXT_max_fragment_length_512) && \ 369 ((value) <= TLSEXT_max_fragment_length_4096)) 370 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \ 371 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode) 372 # define GET_MAX_FRAGMENT_LENGTH(session) \ 373 (512U << (session->ext.max_fragment_len_mode - 1)) 374 375 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ) 376 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE) 377 378 /* Mostly for SSLv3 */ 379 # define SSL_PKEY_RSA 0 380 # define SSL_PKEY_RSA_PSS_SIGN 1 381 # define SSL_PKEY_DSA_SIGN 2 382 # define SSL_PKEY_ECC 3 383 # define SSL_PKEY_GOST01 4 384 # define SSL_PKEY_GOST12_256 5 385 # define SSL_PKEY_GOST12_512 6 386 # define SSL_PKEY_ED25519 7 387 # define SSL_PKEY_ED448 8 388 # define SSL_PKEY_NUM 9 389 390 /*- 391 * SSL_kRSA <- RSA_ENC 392 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 393 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 394 * SSL_aRSA <- RSA_ENC | RSA_SIGN 395 * SSL_aDSS <- DSA_SIGN 396 */ 397 398 /*- 399 #define CERT_INVALID 0 400 #define CERT_PUBLIC_KEY 1 401 #define CERT_PRIVATE_KEY 2 402 */ 403 404 /* Post-Handshake Authentication state */ 405 typedef enum { 406 SSL_PHA_NONE = 0, 407 SSL_PHA_EXT_SENT, /* client-side only: extension sent */ 408 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */ 409 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */ 410 SSL_PHA_REQUESTED /* request received by client, or sent by server */ 411 } SSL_PHA_STATE; 412 413 /* CipherSuite length. SSLv3 and all TLS versions. */ 414 # define TLS_CIPHER_LEN 2 415 /* used to hold info on the particular ciphers used */ 416 struct ssl_cipher_st { 417 uint32_t valid; 418 const char *name; /* text name */ 419 const char *stdname; /* RFC name */ 420 uint32_t id; /* id, 4 bytes, first is version */ 421 /* 422 * changed in 1.0.0: these four used to be portions of a single value 423 * 'algorithms' 424 */ 425 uint32_t algorithm_mkey; /* key exchange algorithm */ 426 uint32_t algorithm_auth; /* server authentication */ 427 uint32_t algorithm_enc; /* symmetric encryption */ 428 uint32_t algorithm_mac; /* symmetric authentication */ 429 int min_tls; /* minimum SSL/TLS protocol version */ 430 int max_tls; /* maximum SSL/TLS protocol version */ 431 int min_dtls; /* minimum DTLS protocol version */ 432 int max_dtls; /* maximum DTLS protocol version */ 433 uint32_t algo_strength; /* strength and export flags */ 434 uint32_t algorithm2; /* Extra flags */ 435 int32_t strength_bits; /* Number of bits really used */ 436 uint32_t alg_bits; /* Number of bits for algorithm */ 437 }; 438 439 /* Used to hold SSL/TLS functions */ 440 struct ssl_method_st { 441 int version; 442 unsigned flags; 443 unsigned long mask; 444 int (*ssl_new) (SSL *s); 445 int (*ssl_clear) (SSL *s); 446 void (*ssl_free) (SSL *s); 447 int (*ssl_accept) (SSL *s); 448 int (*ssl_connect) (SSL *s); 449 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes); 450 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes); 451 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written); 452 int (*ssl_shutdown) (SSL *s); 453 int (*ssl_renegotiate) (SSL *s); 454 int (*ssl_renegotiate_check) (SSL *s, int); 455 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type, 456 unsigned char *buf, size_t len, int peek, 457 size_t *readbytes); 458 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len, 459 size_t *written); 460 int (*ssl_dispatch_alert) (SSL *s); 461 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg); 462 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg); 463 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr); 464 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt, 465 size_t *len); 466 size_t (*ssl_pending) (const SSL *s); 467 int (*num_ciphers) (void); 468 const SSL_CIPHER *(*get_cipher) (unsigned ncipher); 469 long (*get_timeout) (void); 470 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 471 int (*ssl_version) (void); 472 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void)); 473 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void)); 474 }; 475 476 /* 477 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for 478 * consistency, even in the event of OPENSSL_NO_PSK being defined. 479 */ 480 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 256 481 482 /*- 483 * Lets make this into an ASN.1 type structure as follows 484 * SSL_SESSION_ID ::= SEQUENCE { 485 * version INTEGER, -- structure version number 486 * SSLversion INTEGER, -- SSL version number 487 * Cipher OCTET STRING, -- the 3 byte cipher ID 488 * Session_ID OCTET STRING, -- the Session ID 489 * Master_key OCTET STRING, -- the master key 490 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument 491 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time 492 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds 493 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate 494 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context 495 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' 496 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension 497 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint 498 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity 499 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket 500 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) 501 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method 502 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username 503 * flags [ 13 ] EXPLICIT INTEGER -- optional flags 504 * } 505 * Look in ssl/ssl_asn1.c for more details 506 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). 507 */ 508 struct ssl_session_st { 509 int ssl_version; /* what ssl version session info is being kept 510 * in here? */ 511 size_t master_key_length; 512 513 /* TLSv1.3 early_secret used for external PSKs */ 514 unsigned char early_secret[EVP_MAX_MD_SIZE]; 515 /* 516 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption 517 * PSK 518 */ 519 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH]; 520 /* session_id - valid? */ 521 size_t session_id_length; 522 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 523 /* 524 * this is used to determine whether the session is being reused in the 525 * appropriate context. It is up to the application to set this, via 526 * SSL_new 527 */ 528 size_t sid_ctx_length; 529 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 530 # ifndef OPENSSL_NO_PSK 531 char *psk_identity_hint; 532 char *psk_identity; 533 # endif 534 /* 535 * Used to indicate that session resumption is not allowed. Applications 536 * can also set this bit for a new session via not_resumable_session_cb 537 * to disable session caching and tickets. 538 */ 539 int not_resumable; 540 /* This is the cert and type for the other end. */ 541 X509 *peer; 542 int peer_type; 543 /* Certificate chain peer sent. */ 544 STACK_OF(X509) *peer_chain; 545 /* 546 * when app_verify_callback accepts a session where the peer's 547 * certificate is not ok, we must remember the error for session reuse: 548 */ 549 long verify_result; /* only for servers */ 550 CRYPTO_REF_COUNT references; 551 long timeout; 552 long time; 553 unsigned int compress_meth; /* Need to lookup the method */ 554 const SSL_CIPHER *cipher; 555 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to 556 * load the 'cipher' structure */ 557 CRYPTO_EX_DATA ex_data; /* application specific data */ 558 /* 559 * These are used to make removal of session-ids more efficient and to 560 * implement a maximum cache size. 561 */ 562 struct ssl_session_st *prev, *next; 563 564 struct { 565 char *hostname; 566 /* RFC4507 info */ 567 unsigned char *tick; /* Session ticket */ 568 size_t ticklen; /* Session ticket length */ 569 /* Session lifetime hint in seconds */ 570 unsigned long tick_lifetime_hint; 571 uint32_t tick_age_add; 572 /* Max number of bytes that can be sent as early data */ 573 uint32_t max_early_data; 574 /* The ALPN protocol selected for this session */ 575 unsigned char *alpn_selected; 576 size_t alpn_selected_len; 577 /* 578 * Maximum Fragment Length as per RFC 4366. 579 * If this value does not contain RFC 4366 allowed values (1-4) then 580 * either the Maximum Fragment Length Negotiation failed or was not 581 * performed at all. 582 */ 583 uint8_t max_fragment_len_mode; 584 } ext; 585 # ifndef OPENSSL_NO_SRP 586 char *srp_username; 587 # endif 588 unsigned char *ticket_appdata; 589 size_t ticket_appdata_len; 590 uint32_t flags; 591 CRYPTO_RWLOCK *lock; 592 }; 593 594 /* Extended master secret support */ 595 # define SSL_SESS_FLAG_EXTMS 0x1 596 597 # ifndef OPENSSL_NO_SRP 598 599 typedef struct srp_ctx_st { 600 /* param for all the callbacks */ 601 void *SRP_cb_arg; 602 /* set client Hello login callback */ 603 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *); 604 /* set SRP N/g param callback for verification */ 605 int (*SRP_verify_param_callback) (SSL *, void *); 606 /* set SRP client passwd callback */ 607 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *); 608 char *login; 609 BIGNUM *N, *g, *s, *B, *A; 610 BIGNUM *a, *b, *v; 611 char *info; 612 int strength; 613 unsigned long srp_Mask; 614 } SRP_CTX; 615 616 # endif 617 618 typedef enum { 619 SSL_EARLY_DATA_NONE = 0, 620 SSL_EARLY_DATA_CONNECT_RETRY, 621 SSL_EARLY_DATA_CONNECTING, 622 SSL_EARLY_DATA_WRITE_RETRY, 623 SSL_EARLY_DATA_WRITING, 624 SSL_EARLY_DATA_WRITE_FLUSH, 625 SSL_EARLY_DATA_UNAUTH_WRITING, 626 SSL_EARLY_DATA_FINISHED_WRITING, 627 SSL_EARLY_DATA_ACCEPT_RETRY, 628 SSL_EARLY_DATA_ACCEPTING, 629 SSL_EARLY_DATA_READ_RETRY, 630 SSL_EARLY_DATA_READING, 631 SSL_EARLY_DATA_FINISHED_READING 632 } SSL_EARLY_DATA_STATE; 633 634 /* 635 * We check that the amount of unreadable early data doesn't exceed 636 * max_early_data. max_early_data is given in plaintext bytes. However if it is 637 * unreadable then we only know the number of ciphertext bytes. We also don't 638 * know how much the overhead should be because it depends on the ciphersuite. 639 * We make a small allowance. We assume 5 records of actual data plus the end 640 * of early data alert record. Each record has a tag and a content type byte. 641 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the 642 * content of the alert record either which is 2 bytes. 643 */ 644 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2) 645 646 /* 647 * The allowance we have between the client's calculated ticket age and our own. 648 * We allow for 10 seconds (units are in ms). If a ticket is presented and the 649 * client's age calculation is different by more than this than our own then we 650 * do not allow that ticket for early_data. 651 */ 652 # define TICKET_AGE_ALLOWANCE (10 * 1000) 653 654 #define MAX_COMPRESSIONS_SIZE 255 655 656 struct ssl_comp_st { 657 int id; 658 const char *name; 659 COMP_METHOD *method; 660 }; 661 662 typedef struct raw_extension_st { 663 /* Raw packet data for the extension */ 664 PACKET data; 665 /* Set to 1 if the extension is present or 0 otherwise */ 666 int present; 667 /* Set to 1 if we have already parsed the extension or 0 otherwise */ 668 int parsed; 669 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */ 670 unsigned int type; 671 /* Track what order extensions are received in (0-based). */ 672 size_t received_order; 673 } RAW_EXTENSION; 674 675 typedef struct { 676 unsigned int isv2; 677 unsigned int legacy_version; 678 unsigned char random[SSL3_RANDOM_SIZE]; 679 size_t session_id_len; 680 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 681 size_t dtls_cookie_len; 682 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH]; 683 PACKET ciphersuites; 684 size_t compressions_len; 685 unsigned char compressions[MAX_COMPRESSIONS_SIZE]; 686 PACKET extensions; 687 size_t pre_proc_exts_len; 688 RAW_EXTENSION *pre_proc_exts; 689 } CLIENTHELLO_MSG; 690 691 /* 692 * Extension index values NOTE: Any updates to these defines should be mirrored 693 * with equivalent updates to ext_defs in extensions.c 694 */ 695 typedef enum tlsext_index_en { 696 TLSEXT_IDX_renegotiate, 697 TLSEXT_IDX_server_name, 698 TLSEXT_IDX_max_fragment_length, 699 TLSEXT_IDX_srp, 700 TLSEXT_IDX_ec_point_formats, 701 TLSEXT_IDX_supported_groups, 702 TLSEXT_IDX_session_ticket, 703 TLSEXT_IDX_status_request, 704 TLSEXT_IDX_next_proto_neg, 705 TLSEXT_IDX_application_layer_protocol_negotiation, 706 TLSEXT_IDX_use_srtp, 707 TLSEXT_IDX_encrypt_then_mac, 708 TLSEXT_IDX_signed_certificate_timestamp, 709 TLSEXT_IDX_extended_master_secret, 710 TLSEXT_IDX_signature_algorithms_cert, 711 TLSEXT_IDX_post_handshake_auth, 712 TLSEXT_IDX_signature_algorithms, 713 TLSEXT_IDX_supported_versions, 714 TLSEXT_IDX_psk_kex_modes, 715 TLSEXT_IDX_key_share, 716 TLSEXT_IDX_cookie, 717 TLSEXT_IDX_cryptopro_bug, 718 TLSEXT_IDX_early_data, 719 TLSEXT_IDX_certificate_authorities, 720 TLSEXT_IDX_padding, 721 TLSEXT_IDX_psk, 722 /* Dummy index - must always be the last entry */ 723 TLSEXT_IDX_num_builtins 724 } TLSEXT_INDEX; 725 726 DEFINE_LHASH_OF(SSL_SESSION); 727 /* Needed in ssl_cert.c */ 728 DEFINE_LHASH_OF(X509_NAME); 729 730 # define TLSEXT_KEYNAME_LENGTH 16 731 # define TLSEXT_TICK_KEY_LENGTH 32 732 733 typedef struct ssl_ctx_ext_secure_st { 734 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; 735 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; 736 } SSL_CTX_EXT_SECURE; 737 738 struct ssl_ctx_st { 739 const SSL_METHOD *method; 740 STACK_OF(SSL_CIPHER) *cipher_list; 741 /* same as above but sorted for lookup */ 742 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 743 /* TLSv1.3 specific ciphersuites */ 744 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 745 struct x509_store_st /* X509_STORE */ *cert_store; 746 LHASH_OF(SSL_SESSION) *sessions; 747 /* 748 * Most session-ids that will be cached, default is 749 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. 750 */ 751 size_t session_cache_size; 752 struct ssl_session_st *session_cache_head; 753 struct ssl_session_st *session_cache_tail; 754 /* 755 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT, 756 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which 757 * means only SSL_accept will cache SSL_SESSIONS. 758 */ 759 uint32_t session_cache_mode; 760 /* 761 * If timeout is not 0, it is the default timeout value set when 762 * SSL_new() is called. This has been put in to make life easier to set 763 * things up 764 */ 765 long session_timeout; 766 /* 767 * If this callback is not null, it will be called each time a session id 768 * is added to the cache. If this function returns 1, it means that the 769 * callback will do a SSL_SESSION_free() when it has finished using it. 770 * Otherwise, on 0, it means the callback has finished with it. If 771 * remove_session_cb is not null, it will be called when a session-id is 772 * removed from the cache. After the call, OpenSSL will 773 * SSL_SESSION_free() it. 774 */ 775 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess); 776 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess); 777 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl, 778 const unsigned char *data, int len, 779 int *copy); 780 struct { 781 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */ 782 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */ 783 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */ 784 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */ 785 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */ 786 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */ 787 TSAN_QUALIFIER int sess_miss; /* session lookup misses */ 788 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */ 789 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */ 790 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */ 791 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in 792 * the cache was passed back via 793 * the callback. This indicates 794 * that the application is 795 * supplying session-id's from 796 * other processes - spooky 797 * :-) */ 798 } stats; 799 800 CRYPTO_REF_COUNT references; 801 802 /* if defined, these override the X509_verify_cert() calls */ 803 int (*app_verify_callback) (X509_STORE_CTX *, void *); 804 void *app_verify_arg; 805 /* 806 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored 807 * ('app_verify_callback' was called with just one argument) 808 */ 809 810 /* Default password callback. */ 811 pem_password_cb *default_passwd_callback; 812 813 /* Default password callback user data. */ 814 void *default_passwd_callback_userdata; 815 816 /* get client cert callback */ 817 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey); 818 819 /* cookie generate callback */ 820 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie, 821 unsigned int *cookie_len); 822 823 /* verify cookie callback */ 824 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie, 825 unsigned int cookie_len); 826 827 /* TLS1.3 app-controlled cookie generate callback */ 828 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie, 829 size_t *cookie_len); 830 831 /* TLS1.3 verify app-controlled cookie callback */ 832 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie, 833 size_t cookie_len); 834 835 CRYPTO_EX_DATA ex_data; 836 837 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */ 838 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */ 839 840 STACK_OF(X509) *extra_certs; 841 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */ 842 843 /* Default values used when no per-SSL value is defined follow */ 844 845 /* used if SSL's info_callback is NULL */ 846 void (*info_callback) (const SSL *ssl, int type, int val); 847 848 /* 849 * What we put in certificate_authorities extension for TLS 1.3 850 * (ClientHello and CertificateRequest) or just client cert requests for 851 * earlier versions. If client_ca_names is populated then it is only used 852 * for client cert requests, and in preference to ca_names. 853 */ 854 STACK_OF(X509_NAME) *ca_names; 855 STACK_OF(X509_NAME) *client_ca_names; 856 857 /* 858 * Default values to use in SSL structures follow (these are copied by 859 * SSL_new) 860 */ 861 862 uint32_t options; 863 uint32_t mode; 864 int min_proto_version; 865 int max_proto_version; 866 size_t max_cert_list; 867 868 struct cert_st /* CERT */ *cert; 869 int read_ahead; 870 871 /* callback that allows applications to peek at protocol messages */ 872 void (*msg_callback) (int write_p, int version, int content_type, 873 const void *buf, size_t len, SSL *ssl, void *arg); 874 void *msg_callback_arg; 875 876 uint32_t verify_mode; 877 size_t sid_ctx_length; 878 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 879 /* called 'verify_callback' in the SSL */ 880 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx); 881 882 /* Default generate session ID callback. */ 883 GEN_SESSION_CB generate_session_id; 884 885 X509_VERIFY_PARAM *param; 886 887 int quiet_shutdown; 888 889 # ifndef OPENSSL_NO_CT 890 CTLOG_STORE *ctlog_store; /* CT Log Store */ 891 /* 892 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 893 * If they are not, the connection should be aborted. 894 */ 895 ssl_ct_validation_cb ct_validation_callback; 896 void *ct_validation_callback_arg; 897 # endif 898 899 /* 900 * If we're using more than one pipeline how should we divide the data 901 * up between the pipes? 902 */ 903 size_t split_send_fragment; 904 /* 905 * Maximum amount of data to send in one fragment. actual record size can 906 * be more than this due to padding and MAC overheads. 907 */ 908 size_t max_send_fragment; 909 910 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 911 size_t max_pipelines; 912 913 /* The default read buffer length to use (0 means not set) */ 914 size_t default_read_buf_len; 915 916 # ifndef OPENSSL_NO_ENGINE 917 /* 918 * Engine to pass requests for client certs to 919 */ 920 ENGINE *client_cert_engine; 921 # endif 922 923 /* ClientHello callback. Mostly for extensions, but not entirely. */ 924 SSL_client_hello_cb_fn client_hello_cb; 925 void *client_hello_cb_arg; 926 927 /* TLS extensions. */ 928 struct { 929 /* TLS extensions servername callback */ 930 int (*servername_cb) (SSL *, int *, void *); 931 void *servername_arg; 932 /* RFC 4507 session ticket keys */ 933 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; 934 SSL_CTX_EXT_SECURE *secure; 935 /* Callback to support customisation of ticket key setting */ 936 int (*ticket_key_cb) (SSL *ssl, 937 unsigned char *name, unsigned char *iv, 938 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 939 940 /* certificate status request info */ 941 /* Callback for status request */ 942 int (*status_cb) (SSL *ssl, void *arg); 943 void *status_arg; 944 /* ext status type used for CSR extension (OCSP Stapling) */ 945 int status_type; 946 /* RFC 4366 Maximum Fragment Length Negotiation */ 947 uint8_t max_fragment_len_mode; 948 949 # ifndef OPENSSL_NO_EC 950 /* EC extension values inherited by SSL structure */ 951 size_t ecpointformats_len; 952 unsigned char *ecpointformats; 953 size_t supportedgroups_len; 954 uint16_t *supportedgroups; 955 # endif /* OPENSSL_NO_EC */ 956 957 /* 958 * ALPN information (we are in the process of transitioning from NPN to 959 * ALPN.) 960 */ 961 962 /*- 963 * For a server, this contains a callback function that allows the 964 * server to select the protocol for the connection. 965 * out: on successful return, this must point to the raw protocol 966 * name (without the length prefix). 967 * outlen: on successful return, this contains the length of |*out|. 968 * in: points to the client's list of supported protocols in 969 * wire-format. 970 * inlen: the length of |in|. 971 */ 972 int (*alpn_select_cb) (SSL *s, 973 const unsigned char **out, 974 unsigned char *outlen, 975 const unsigned char *in, 976 unsigned int inlen, void *arg); 977 void *alpn_select_cb_arg; 978 979 /* 980 * For a client, this contains the list of supported protocols in wire 981 * format. 982 */ 983 unsigned char *alpn; 984 size_t alpn_len; 985 986 # ifndef OPENSSL_NO_NEXTPROTONEG 987 /* Next protocol negotiation information */ 988 989 /* 990 * For a server, this contains a callback function by which the set of 991 * advertised protocols can be provided. 992 */ 993 SSL_CTX_npn_advertised_cb_func npn_advertised_cb; 994 void *npn_advertised_cb_arg; 995 /* 996 * For a client, this contains a callback function that selects the next 997 * protocol from the list provided by the server. 998 */ 999 SSL_CTX_npn_select_cb_func npn_select_cb; 1000 void *npn_select_cb_arg; 1001 # endif 1002 1003 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH]; 1004 } ext; 1005 1006 # ifndef OPENSSL_NO_PSK 1007 SSL_psk_client_cb_func psk_client_callback; 1008 SSL_psk_server_cb_func psk_server_callback; 1009 # endif 1010 SSL_psk_find_session_cb_func psk_find_session_cb; 1011 SSL_psk_use_session_cb_func psk_use_session_cb; 1012 1013 # ifndef OPENSSL_NO_SRP 1014 SRP_CTX srp_ctx; /* ctx for SRP authentication */ 1015 # endif 1016 1017 /* Shared DANE context */ 1018 struct dane_ctx_st dane; 1019 1020 # ifndef OPENSSL_NO_SRTP 1021 /* SRTP profiles we are willing to do from RFC 5764 */ 1022 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1023 # endif 1024 /* 1025 * Callback for disabling session caching and ticket support on a session 1026 * basis, depending on the chosen cipher. 1027 */ 1028 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1029 1030 CRYPTO_RWLOCK *lock; 1031 1032 /* 1033 * Callback for logging key material for use with debugging tools like 1034 * Wireshark. The callback should log `line` followed by a newline. 1035 */ 1036 SSL_CTX_keylog_cb_func keylog_callback; 1037 1038 /* 1039 * The maximum number of bytes advertised in session tickets that can be 1040 * sent as early data. 1041 */ 1042 uint32_t max_early_data; 1043 1044 /* 1045 * The maximum number of bytes of early data that a server will tolerate 1046 * (which should be at least as much as max_early_data). 1047 */ 1048 uint32_t recv_max_early_data; 1049 1050 /* TLS1.3 padding callback */ 1051 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1052 void *record_padding_arg; 1053 size_t block_padding; 1054 1055 /* Session ticket appdata */ 1056 SSL_CTX_generate_session_ticket_fn generate_ticket_cb; 1057 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb; 1058 void *ticket_cb_data; 1059 1060 /* The number of TLS1.3 tickets to automatically send */ 1061 size_t num_tickets; 1062 1063 /* Callback to determine if early_data is acceptable or not */ 1064 SSL_allow_early_data_cb_fn allow_early_data_cb; 1065 void *allow_early_data_cb_data; 1066 1067 /* Do we advertise Post-handshake auth support? */ 1068 int pha_enabled; 1069 }; 1070 1071 struct ssl_st { 1072 /* 1073 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, 1074 * DTLS1_VERSION) 1075 */ 1076 int version; 1077 /* SSLv3 */ 1078 const SSL_METHOD *method; 1079 /* 1080 * There are 2 BIO's even though they are normally both the same. This 1081 * is so data can be read and written to different handlers 1082 */ 1083 /* used by SSL_read */ 1084 BIO *rbio; 1085 /* used by SSL_write */ 1086 BIO *wbio; 1087 /* used during session-id reuse to concatenate messages */ 1088 BIO *bbio; 1089 /* 1090 * This holds a variable that indicates what we were doing when a 0 or -1 1091 * is returned. This is needed for non-blocking IO so we know what 1092 * request needs re-doing when in SSL_accept or SSL_connect 1093 */ 1094 int rwstate; 1095 int (*handshake_func) (SSL *); 1096 /* 1097 * Imagine that here's a boolean member "init" that is switched as soon 1098 * as SSL_set_{accept/connect}_state is called for the first time, so 1099 * that "state" and "handshake_func" are properly initialized. But as 1100 * handshake_func is == 0 until then, we use this test instead of an 1101 * "init" member. 1102 */ 1103 /* are we the server side? */ 1104 int server; 1105 /* 1106 * Generate a new session or reuse an old one. 1107 * NB: For servers, the 'new' session may actually be a previously 1108 * cached session or even the previous session unless 1109 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set 1110 */ 1111 int new_session; 1112 /* don't send shutdown packets */ 1113 int quiet_shutdown; 1114 /* we have shut things down, 0x01 sent, 0x02 for received */ 1115 int shutdown; 1116 /* where we are */ 1117 OSSL_STATEM statem; 1118 SSL_EARLY_DATA_STATE early_data_state; 1119 BUF_MEM *init_buf; /* buffer used during init */ 1120 void *init_msg; /* pointer to handshake message body, set by 1121 * ssl3_get_message() */ 1122 size_t init_num; /* amount read/written */ 1123 size_t init_off; /* amount read/written */ 1124 struct ssl3_state_st *s3; /* SSLv3 variables */ 1125 struct dtls1_state_st *d1; /* DTLSv1 variables */ 1126 /* callback that allows applications to peek at protocol messages */ 1127 void (*msg_callback) (int write_p, int version, int content_type, 1128 const void *buf, size_t len, SSL *ssl, void *arg); 1129 void *msg_callback_arg; 1130 int hit; /* reusing a previous session */ 1131 X509_VERIFY_PARAM *param; 1132 /* Per connection DANE state */ 1133 SSL_DANE dane; 1134 /* crypto */ 1135 STACK_OF(SSL_CIPHER) *peer_ciphers; 1136 STACK_OF(SSL_CIPHER) *cipher_list; 1137 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 1138 /* TLSv1.3 specific ciphersuites */ 1139 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 1140 /* 1141 * These are the ones being used, the ones in SSL_SESSION are the ones to 1142 * be 'copied' into these ones 1143 */ 1144 uint32_t mac_flags; 1145 /* 1146 * The TLS1.3 secrets. 1147 */ 1148 unsigned char early_secret[EVP_MAX_MD_SIZE]; 1149 unsigned char handshake_secret[EVP_MAX_MD_SIZE]; 1150 unsigned char master_secret[EVP_MAX_MD_SIZE]; 1151 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE]; 1152 unsigned char client_finished_secret[EVP_MAX_MD_SIZE]; 1153 unsigned char server_finished_secret[EVP_MAX_MD_SIZE]; 1154 unsigned char server_finished_hash[EVP_MAX_MD_SIZE]; 1155 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE]; 1156 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE]; 1157 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE]; 1158 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE]; 1159 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE]; 1160 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */ 1161 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */ 1162 EVP_MD_CTX *read_hash; /* used for mac generation */ 1163 COMP_CTX *compress; /* compression */ 1164 COMP_CTX *expand; /* uncompress */ 1165 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1166 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */ 1167 EVP_MD_CTX *write_hash; /* used for mac generation */ 1168 /* session info */ 1169 /* client cert? */ 1170 /* This is used to hold the server certificate used */ 1171 struct cert_st /* CERT */ *cert; 1172 1173 /* 1174 * The hash of all messages prior to the CertificateVerify, and the length 1175 * of that hash. 1176 */ 1177 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE]; 1178 size_t cert_verify_hash_len; 1179 1180 /* Flag to indicate whether we should send a HelloRetryRequest or not */ 1181 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE} 1182 hello_retry_request; 1183 1184 /* 1185 * the session_id_context is used to ensure sessions are only reused in 1186 * the appropriate context 1187 */ 1188 size_t sid_ctx_length; 1189 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 1190 /* This can also be in the session once a session is established */ 1191 SSL_SESSION *session; 1192 /* TLSv1.3 PSK session */ 1193 SSL_SESSION *psksession; 1194 unsigned char *psksession_id; 1195 size_t psksession_id_len; 1196 /* Default generate session ID callback. */ 1197 GEN_SESSION_CB generate_session_id; 1198 /* 1199 * The temporary TLSv1.3 session id. This isn't really a session id at all 1200 * but is a random value sent in the legacy session id field. 1201 */ 1202 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 1203 size_t tmp_session_id_len; 1204 /* Used in SSL3 */ 1205 /* 1206 * 0 don't care about verify failure. 1207 * 1 fail if verify fails 1208 */ 1209 uint32_t verify_mode; 1210 /* fail if callback returns 0 */ 1211 int (*verify_callback) (int ok, X509_STORE_CTX *ctx); 1212 /* optional informational callback */ 1213 void (*info_callback) (const SSL *ssl, int type, int val); 1214 /* error bytes to be written */ 1215 int error; 1216 /* actual code */ 1217 int error_code; 1218 # ifndef OPENSSL_NO_PSK 1219 SSL_psk_client_cb_func psk_client_callback; 1220 SSL_psk_server_cb_func psk_server_callback; 1221 # endif 1222 SSL_psk_find_session_cb_func psk_find_session_cb; 1223 SSL_psk_use_session_cb_func psk_use_session_cb; 1224 1225 SSL_CTX *ctx; 1226 /* Verified chain of peer */ 1227 STACK_OF(X509) *verified_chain; 1228 long verify_result; 1229 /* extra application data */ 1230 CRYPTO_EX_DATA ex_data; 1231 /* 1232 * What we put in certificate_authorities extension for TLS 1.3 1233 * (ClientHello and CertificateRequest) or just client cert requests for 1234 * earlier versions. If client_ca_names is populated then it is only used 1235 * for client cert requests, and in preference to ca_names. 1236 */ 1237 STACK_OF(X509_NAME) *ca_names; 1238 STACK_OF(X509_NAME) *client_ca_names; 1239 CRYPTO_REF_COUNT references; 1240 /* protocol behaviour */ 1241 uint32_t options; 1242 /* API behaviour */ 1243 uint32_t mode; 1244 int min_proto_version; 1245 int max_proto_version; 1246 size_t max_cert_list; 1247 int first_packet; 1248 /* 1249 * What was passed in ClientHello.legacy_version. Used for RSA pre-master 1250 * secret and SSLv3/TLS (<=1.2) rollback check 1251 */ 1252 int client_version; 1253 /* 1254 * If we're using more than one pipeline how should we divide the data 1255 * up between the pipes? 1256 */ 1257 size_t split_send_fragment; 1258 /* 1259 * Maximum amount of data to send in one fragment. actual record size can 1260 * be more than this due to padding and MAC overheads. 1261 */ 1262 size_t max_send_fragment; 1263 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 1264 size_t max_pipelines; 1265 1266 struct { 1267 /* Built-in extension flags */ 1268 uint8_t extflags[TLSEXT_IDX_num_builtins]; 1269 /* TLS extension debug callback */ 1270 void (*debug_cb)(SSL *s, int client_server, int type, 1271 const unsigned char *data, int len, void *arg); 1272 void *debug_arg; 1273 char *hostname; 1274 /* certificate status request info */ 1275 /* Status type or -1 if no status type */ 1276 int status_type; 1277 /* Raw extension data, if seen */ 1278 unsigned char *scts; 1279 /* Length of raw extension data, if seen */ 1280 uint16_t scts_len; 1281 /* Expect OCSP CertificateStatus message */ 1282 int status_expected; 1283 1284 struct { 1285 /* OCSP status request only */ 1286 STACK_OF(OCSP_RESPID) *ids; 1287 X509_EXTENSIONS *exts; 1288 /* OCSP response received or to be sent */ 1289 unsigned char *resp; 1290 size_t resp_len; 1291 } ocsp; 1292 1293 /* RFC4507 session ticket expected to be received or sent */ 1294 int ticket_expected; 1295 # ifndef OPENSSL_NO_EC 1296 size_t ecpointformats_len; 1297 /* our list */ 1298 unsigned char *ecpointformats; 1299 1300 size_t peer_ecpointformats_len; 1301 /* peer's list */ 1302 unsigned char *peer_ecpointformats; 1303 # endif /* OPENSSL_NO_EC */ 1304 size_t supportedgroups_len; 1305 /* our list */ 1306 uint16_t *supportedgroups; 1307 1308 size_t peer_supportedgroups_len; 1309 /* peer's list */ 1310 uint16_t *peer_supportedgroups; 1311 1312 /* TLS Session Ticket extension override */ 1313 TLS_SESSION_TICKET_EXT *session_ticket; 1314 /* TLS Session Ticket extension callback */ 1315 tls_session_ticket_ext_cb_fn session_ticket_cb; 1316 void *session_ticket_cb_arg; 1317 /* TLS pre-shared secret session resumption */ 1318 tls_session_secret_cb_fn session_secret_cb; 1319 void *session_secret_cb_arg; 1320 /* 1321 * For a client, this contains the list of supported protocols in wire 1322 * format. 1323 */ 1324 unsigned char *alpn; 1325 size_t alpn_len; 1326 /* 1327 * Next protocol negotiation. For the client, this is the protocol that 1328 * we sent in NextProtocol and is set when handling ServerHello 1329 * extensions. For a server, this is the client's selected_protocol from 1330 * NextProtocol and is set when handling the NextProtocol message, before 1331 * the Finished message. 1332 */ 1333 unsigned char *npn; 1334 size_t npn_len; 1335 1336 /* The available PSK key exchange modes */ 1337 int psk_kex_mode; 1338 1339 /* Set to one if we have negotiated ETM */ 1340 int use_etm; 1341 1342 /* Are we expecting to receive early data? */ 1343 int early_data; 1344 /* Is the session suitable for early data? */ 1345 int early_data_ok; 1346 1347 /* May be sent by a server in HRR. Must be echoed back in ClientHello */ 1348 unsigned char *tls13_cookie; 1349 size_t tls13_cookie_len; 1350 /* Have we received a cookie from the client? */ 1351 int cookieok; 1352 1353 /* 1354 * Maximum Fragment Length as per RFC 4366. 1355 * If this member contains one of the allowed values (1-4) 1356 * then we should include Maximum Fragment Length Negotiation 1357 * extension in Client Hello. 1358 * Please note that value of this member does not have direct 1359 * effect. The actual (binding) value is stored in SSL_SESSION, 1360 * as this extension is optional on server side. 1361 */ 1362 uint8_t max_fragment_len_mode; 1363 1364 /* 1365 * On the client side the number of ticket identities we sent in the 1366 * ClientHello. On the server side the identity of the ticket we 1367 * selected. 1368 */ 1369 int tick_identity; 1370 } ext; 1371 1372 /* 1373 * Parsed form of the ClientHello, kept around across client_hello_cb 1374 * calls. 1375 */ 1376 CLIENTHELLO_MSG *clienthello; 1377 1378 /*- 1379 * no further mod of servername 1380 * 0 : call the servername extension callback. 1381 * 1 : prepare 2, allow last ack just after in server callback. 1382 * 2 : don't call servername callback, no ack in server hello 1383 */ 1384 int servername_done; 1385 # ifndef OPENSSL_NO_CT 1386 /* 1387 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 1388 * If they are not, the connection should be aborted. 1389 */ 1390 ssl_ct_validation_cb ct_validation_callback; 1391 /* User-supplied argument that is passed to the ct_validation_callback */ 1392 void *ct_validation_callback_arg; 1393 /* 1394 * Consolidated stack of SCTs from all sources. 1395 * Lazily populated by CT_get_peer_scts(SSL*) 1396 */ 1397 STACK_OF(SCT) *scts; 1398 /* Have we attempted to find/parse SCTs yet? */ 1399 int scts_parsed; 1400 # endif 1401 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */ 1402 # ifndef OPENSSL_NO_SRTP 1403 /* What we'll do */ 1404 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1405 /* What's been chosen */ 1406 SRTP_PROTECTION_PROFILE *srtp_profile; 1407 # endif 1408 /*- 1409 * 1 if we are renegotiating. 1410 * 2 if we are a server and are inside a handshake 1411 * (i.e. not just sending a HelloRequest) 1412 */ 1413 int renegotiate; 1414 /* If sending a KeyUpdate is pending */ 1415 int key_update; 1416 /* Post-handshake authentication state */ 1417 SSL_PHA_STATE post_handshake_auth; 1418 int pha_enabled; 1419 uint8_t* pha_context; 1420 size_t pha_context_len; 1421 int certreqs_sent; 1422 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */ 1423 1424 # ifndef OPENSSL_NO_SRP 1425 /* ctx for SRP authentication */ 1426 SRP_CTX srp_ctx; 1427 # endif 1428 /* 1429 * Callback for disabling session caching and ticket support on a session 1430 * basis, depending on the chosen cipher. 1431 */ 1432 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1433 RECORD_LAYER rlayer; 1434 /* Default password callback. */ 1435 pem_password_cb *default_passwd_callback; 1436 /* Default password callback user data. */ 1437 void *default_passwd_callback_userdata; 1438 /* Async Job info */ 1439 ASYNC_JOB *job; 1440 ASYNC_WAIT_CTX *waitctx; 1441 size_t asyncrw; 1442 1443 /* 1444 * The maximum number of bytes advertised in session tickets that can be 1445 * sent as early data. 1446 */ 1447 uint32_t max_early_data; 1448 /* 1449 * The maximum number of bytes of early data that a server will tolerate 1450 * (which should be at least as much as max_early_data). 1451 */ 1452 uint32_t recv_max_early_data; 1453 1454 /* 1455 * The number of bytes of early data received so far. If we accepted early 1456 * data then this is a count of the plaintext bytes. If we rejected it then 1457 * this is a count of the ciphertext bytes. 1458 */ 1459 uint32_t early_data_count; 1460 1461 /* TLS1.3 padding callback */ 1462 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1463 void *record_padding_arg; 1464 size_t block_padding; 1465 1466 CRYPTO_RWLOCK *lock; 1467 1468 /* The number of TLS1.3 tickets to automatically send */ 1469 size_t num_tickets; 1470 /* The number of TLS1.3 tickets actually sent so far */ 1471 size_t sent_tickets; 1472 /* The next nonce value to use when we send a ticket on this connection */ 1473 uint64_t next_ticket_nonce; 1474 1475 /* Callback to determine if early_data is acceptable or not */ 1476 SSL_allow_early_data_cb_fn allow_early_data_cb; 1477 void *allow_early_data_cb_data; 1478 1479 /* 1480 * Signature algorithms shared by client and server: cached because these 1481 * are used most often. 1482 */ 1483 const struct sigalg_lookup_st **shared_sigalgs; 1484 size_t shared_sigalgslen; 1485 }; 1486 1487 /* 1488 * Structure containing table entry of values associated with the signature 1489 * algorithms (signature scheme) extension 1490 */ 1491 typedef struct sigalg_lookup_st { 1492 /* TLS 1.3 signature scheme name */ 1493 const char *name; 1494 /* Raw value used in extension */ 1495 uint16_t sigalg; 1496 /* NID of hash algorithm or NID_undef if no hash */ 1497 int hash; 1498 /* Index of hash algorithm or -1 if no hash algorithm */ 1499 int hash_idx; 1500 /* NID of signature algorithm */ 1501 int sig; 1502 /* Index of signature algorithm */ 1503 int sig_idx; 1504 /* Combined hash and signature NID, if any */ 1505 int sigandhash; 1506 /* Required public key curve (ECDSA only) */ 1507 int curve; 1508 } SIGALG_LOOKUP; 1509 1510 typedef struct tls_group_info_st { 1511 int nid; /* Curve NID */ 1512 int secbits; /* Bits of security (from SP800-57) */ 1513 uint16_t flags; /* Flags: currently just group type */ 1514 } TLS_GROUP_INFO; 1515 1516 /* flags values */ 1517 # define TLS_CURVE_TYPE 0x3 /* Mask for group type */ 1518 # define TLS_CURVE_PRIME 0x0 1519 # define TLS_CURVE_CHAR2 0x1 1520 # define TLS_CURVE_CUSTOM 0x2 1521 1522 typedef struct cert_pkey_st CERT_PKEY; 1523 1524 /* 1525 * Structure containing table entry of certificate info corresponding to 1526 * CERT_PKEY entries 1527 */ 1528 typedef struct { 1529 int nid; /* NID of public key algorithm */ 1530 uint32_t amask; /* authmask corresponding to key type */ 1531 } SSL_CERT_LOOKUP; 1532 1533 typedef struct ssl3_state_st { 1534 long flags; 1535 size_t read_mac_secret_size; 1536 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 1537 size_t write_mac_secret_size; 1538 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 1539 unsigned char server_random[SSL3_RANDOM_SIZE]; 1540 unsigned char client_random[SSL3_RANDOM_SIZE]; 1541 /* flags for countermeasure against known-IV weakness */ 1542 int need_empty_fragments; 1543 int empty_fragment_done; 1544 /* used during startup, digest all incoming/outgoing packets */ 1545 BIO *handshake_buffer; 1546 /* 1547 * When handshake digest is determined, buffer is hashed and 1548 * freed and MD_CTX for the required digest is stored here. 1549 */ 1550 EVP_MD_CTX *handshake_dgst; 1551 /* 1552 * Set whenever an expected ChangeCipherSpec message is processed. 1553 * Unset when the peer's Finished message is received. 1554 * Unexpected ChangeCipherSpec messages trigger a fatal alert. 1555 */ 1556 int change_cipher_spec; 1557 int warn_alert; 1558 int fatal_alert; 1559 /* 1560 * we allow one fatal and one warning alert to be outstanding, send close 1561 * alert via the warning alert 1562 */ 1563 int alert_dispatch; 1564 unsigned char send_alert[2]; 1565 /* 1566 * This flag is set when we should renegotiate ASAP, basically when there 1567 * is no more data in the read or write buffers 1568 */ 1569 int renegotiate; 1570 int total_renegotiations; 1571 int num_renegotiations; 1572 int in_read_app_data; 1573 struct { 1574 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 1575 unsigned char finish_md[EVP_MAX_MD_SIZE * 2]; 1576 size_t finish_md_len; 1577 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2]; 1578 size_t peer_finish_md_len; 1579 size_t message_size; 1580 int message_type; 1581 /* used to hold the new cipher we are going to use */ 1582 const SSL_CIPHER *new_cipher; 1583 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) 1584 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */ 1585 # endif 1586 /* used for certificate requests */ 1587 int cert_req; 1588 /* Certificate types in certificate request message. */ 1589 uint8_t *ctype; 1590 size_t ctype_len; 1591 /* Certificate authorities list peer sent */ 1592 STACK_OF(X509_NAME) *peer_ca_names; 1593 size_t key_block_length; 1594 unsigned char *key_block; 1595 const EVP_CIPHER *new_sym_enc; 1596 const EVP_MD *new_hash; 1597 int new_mac_pkey_type; 1598 size_t new_mac_secret_size; 1599 # ifndef OPENSSL_NO_COMP 1600 const SSL_COMP *new_compression; 1601 # else 1602 char *new_compression; 1603 # endif 1604 int cert_request; 1605 /* Raw values of the cipher list from a client */ 1606 unsigned char *ciphers_raw; 1607 size_t ciphers_rawlen; 1608 /* Temporary storage for premaster secret */ 1609 unsigned char *pms; 1610 size_t pmslen; 1611 # ifndef OPENSSL_NO_PSK 1612 /* Temporary storage for PSK key */ 1613 unsigned char *psk; 1614 size_t psklen; 1615 # endif 1616 /* Signature algorithm we actually use */ 1617 const SIGALG_LOOKUP *sigalg; 1618 /* Pointer to certificate we use */ 1619 CERT_PKEY *cert; 1620 /* 1621 * signature algorithms peer reports: e.g. supported signature 1622 * algorithms extension for server or as part of a certificate 1623 * request for client. 1624 * Keep track of the algorithms for TLS and X.509 usage separately. 1625 */ 1626 uint16_t *peer_sigalgs; 1627 uint16_t *peer_cert_sigalgs; 1628 /* Size of above arrays */ 1629 size_t peer_sigalgslen; 1630 size_t peer_cert_sigalgslen; 1631 /* Sigalg peer actually uses */ 1632 const SIGALG_LOOKUP *peer_sigalg; 1633 /* 1634 * Set if corresponding CERT_PKEY can be used with current 1635 * SSL session: e.g. appropriate curve, signature algorithms etc. 1636 * If zero it can't be used at all. 1637 */ 1638 uint32_t valid_flags[SSL_PKEY_NUM]; 1639 /* 1640 * For servers the following masks are for the key and auth algorithms 1641 * that are supported by the certs below. For clients they are masks of 1642 * *disabled* algorithms based on the current session. 1643 */ 1644 uint32_t mask_k; 1645 uint32_t mask_a; 1646 /* 1647 * The following are used by the client to see if a cipher is allowed or 1648 * not. It contains the minimum and maximum version the client's using 1649 * based on what it knows so far. 1650 */ 1651 int min_ver; 1652 int max_ver; 1653 } tmp; 1654 1655 /* Connection binding to prevent renegotiation attacks */ 1656 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 1657 size_t previous_client_finished_len; 1658 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 1659 size_t previous_server_finished_len; 1660 int send_connection_binding; /* TODOEKR */ 1661 1662 # ifndef OPENSSL_NO_NEXTPROTONEG 1663 /* 1664 * Set if we saw the Next Protocol Negotiation extension from our peer. 1665 */ 1666 int npn_seen; 1667 # endif 1668 1669 /* 1670 * ALPN information (we are in the process of transitioning from NPN to 1671 * ALPN.) 1672 */ 1673 1674 /* 1675 * In a server these point to the selected ALPN protocol after the 1676 * ClientHello has been processed. In a client these contain the protocol 1677 * that the server selected once the ServerHello has been processed. 1678 */ 1679 unsigned char *alpn_selected; 1680 size_t alpn_selected_len; 1681 /* used by the server to know what options were proposed */ 1682 unsigned char *alpn_proposed; 1683 size_t alpn_proposed_len; 1684 /* used by the client to know if it actually sent alpn */ 1685 int alpn_sent; 1686 1687 # ifndef OPENSSL_NO_EC 1688 /* 1689 * This is set to true if we believe that this is a version of Safari 1690 * running on OS X 10.6 or newer. We wish to know this because Safari on 1691 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. 1692 */ 1693 char is_probably_safari; 1694 # endif /* !OPENSSL_NO_EC */ 1695 1696 /* For clients: peer temporary key */ 1697 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) 1698 /* The group_id for the DH/ECDH key */ 1699 uint16_t group_id; 1700 EVP_PKEY *peer_tmp; 1701 # endif 1702 1703 } SSL3_STATE; 1704 1705 /* DTLS structures */ 1706 1707 # ifndef OPENSSL_NO_SCTP 1708 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" 1709 # endif 1710 1711 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */ 1712 # define DTLS1_MAX_MTU_OVERHEAD 48 1713 1714 /* 1715 * Flag used in message reuse to indicate the buffer contains the record 1716 * header as well as the handshake message header. 1717 */ 1718 # define DTLS1_SKIP_RECORD_HEADER 2 1719 1720 struct dtls1_retransmit_state { 1721 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1722 EVP_MD_CTX *write_hash; /* used for mac generation */ 1723 COMP_CTX *compress; /* compression */ 1724 SSL_SESSION *session; 1725 unsigned short epoch; 1726 }; 1727 1728 struct hm_header_st { 1729 unsigned char type; 1730 size_t msg_len; 1731 unsigned short seq; 1732 size_t frag_off; 1733 size_t frag_len; 1734 unsigned int is_ccs; 1735 struct dtls1_retransmit_state saved_retransmit_state; 1736 }; 1737 1738 struct dtls1_timeout_st { 1739 /* Number of read timeouts so far */ 1740 unsigned int read_timeouts; 1741 /* Number of write timeouts so far */ 1742 unsigned int write_timeouts; 1743 /* Number of alerts received so far */ 1744 unsigned int num_alerts; 1745 }; 1746 1747 typedef struct hm_fragment_st { 1748 struct hm_header_st msg_header; 1749 unsigned char *fragment; 1750 unsigned char *reassembly; 1751 } hm_fragment; 1752 1753 typedef struct pqueue_st pqueue; 1754 typedef struct pitem_st pitem; 1755 1756 struct pitem_st { 1757 unsigned char priority[8]; /* 64-bit value in big-endian encoding */ 1758 void *data; 1759 pitem *next; 1760 }; 1761 1762 typedef struct pitem_st *piterator; 1763 1764 pitem *pitem_new(unsigned char *prio64be, void *data); 1765 void pitem_free(pitem *item); 1766 pqueue *pqueue_new(void); 1767 void pqueue_free(pqueue *pq); 1768 pitem *pqueue_insert(pqueue *pq, pitem *item); 1769 pitem *pqueue_peek(pqueue *pq); 1770 pitem *pqueue_pop(pqueue *pq); 1771 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be); 1772 pitem *pqueue_iterator(pqueue *pq); 1773 pitem *pqueue_next(piterator *iter); 1774 size_t pqueue_size(pqueue *pq); 1775 1776 typedef struct dtls1_state_st { 1777 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 1778 size_t cookie_len; 1779 unsigned int cookie_verified; 1780 /* handshake message numbers */ 1781 unsigned short handshake_write_seq; 1782 unsigned short next_handshake_write_seq; 1783 unsigned short handshake_read_seq; 1784 /* Buffered handshake messages */ 1785 pqueue *buffered_messages; 1786 /* Buffered (sent) handshake records */ 1787 pqueue *sent_messages; 1788 size_t link_mtu; /* max on-the-wire DTLS packet size */ 1789 size_t mtu; /* max DTLS packet size */ 1790 struct hm_header_st w_msg_hdr; 1791 struct hm_header_st r_msg_hdr; 1792 struct dtls1_timeout_st timeout; 1793 /* 1794 * Indicates when the last handshake msg sent will timeout 1795 */ 1796 struct timeval next_timeout; 1797 /* Timeout duration */ 1798 unsigned int timeout_duration_us; 1799 1800 unsigned int retransmitting; 1801 # ifndef OPENSSL_NO_SCTP 1802 int shutdown_received; 1803 # endif 1804 1805 DTLS_timer_cb timer_cb; 1806 1807 } DTLS1_STATE; 1808 1809 # ifndef OPENSSL_NO_EC 1810 /* 1811 * From ECC-TLS draft, used in encoding the curve type in ECParameters 1812 */ 1813 # define EXPLICIT_PRIME_CURVE_TYPE 1 1814 # define EXPLICIT_CHAR2_CURVE_TYPE 2 1815 # define NAMED_CURVE_TYPE 3 1816 # endif /* OPENSSL_NO_EC */ 1817 1818 struct cert_pkey_st { 1819 X509 *x509; 1820 EVP_PKEY *privatekey; 1821 /* Chain for this certificate */ 1822 STACK_OF(X509) *chain; 1823 /*- 1824 * serverinfo data for this certificate. The data is in TLS Extension 1825 * wire format, specifically it's a series of records like: 1826 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension) 1827 * uint16_t length; 1828 * uint8_t data[length]; 1829 */ 1830 unsigned char *serverinfo; 1831 size_t serverinfo_length; 1832 }; 1833 /* Retrieve Suite B flags */ 1834 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS) 1835 /* Uses to check strict mode: suite B modes are always strict */ 1836 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \ 1837 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT) 1838 1839 typedef enum { 1840 ENDPOINT_CLIENT = 0, 1841 ENDPOINT_SERVER, 1842 ENDPOINT_BOTH 1843 } ENDPOINT; 1844 1845 1846 typedef struct { 1847 unsigned short ext_type; 1848 ENDPOINT role; 1849 /* The context which this extension applies to */ 1850 unsigned int context; 1851 /* 1852 * Per-connection flags relating to this extension type: not used if 1853 * part of an SSL_CTX structure. 1854 */ 1855 uint32_t ext_flags; 1856 SSL_custom_ext_add_cb_ex add_cb; 1857 SSL_custom_ext_free_cb_ex free_cb; 1858 void *add_arg; 1859 SSL_custom_ext_parse_cb_ex parse_cb; 1860 void *parse_arg; 1861 } custom_ext_method; 1862 1863 /* ext_flags values */ 1864 1865 /* 1866 * Indicates an extension has been received. Used to check for unsolicited or 1867 * duplicate extensions. 1868 */ 1869 # define SSL_EXT_FLAG_RECEIVED 0x1 1870 /* 1871 * Indicates an extension has been sent: used to enable sending of 1872 * corresponding ServerHello extension. 1873 */ 1874 # define SSL_EXT_FLAG_SENT 0x2 1875 1876 typedef struct { 1877 custom_ext_method *meths; 1878 size_t meths_count; 1879 } custom_ext_methods; 1880 1881 typedef struct cert_st { 1882 /* Current active set */ 1883 /* 1884 * ALWAYS points to an element of the pkeys array 1885 * Probably it would make more sense to store 1886 * an index, not a pointer. 1887 */ 1888 CERT_PKEY *key; 1889 # ifndef OPENSSL_NO_DH 1890 EVP_PKEY *dh_tmp; 1891 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); 1892 int dh_tmp_auto; 1893 # endif 1894 /* Flags related to certificates */ 1895 uint32_t cert_flags; 1896 CERT_PKEY pkeys[SSL_PKEY_NUM]; 1897 /* Custom certificate types sent in certificate request message. */ 1898 uint8_t *ctype; 1899 size_t ctype_len; 1900 /* 1901 * supported signature algorithms. When set on a client this is sent in 1902 * the client hello as the supported signature algorithms extension. For 1903 * servers it represents the signature algorithms we are willing to use. 1904 */ 1905 uint16_t *conf_sigalgs; 1906 /* Size of above array */ 1907 size_t conf_sigalgslen; 1908 /* 1909 * Client authentication signature algorithms, if not set then uses 1910 * conf_sigalgs. On servers these will be the signature algorithms sent 1911 * to the client in a certificate request for TLS 1.2. On a client this 1912 * represents the signature algorithms we are willing to use for client 1913 * authentication. 1914 */ 1915 uint16_t *client_sigalgs; 1916 /* Size of above array */ 1917 size_t client_sigalgslen; 1918 /* 1919 * Certificate setup callback: if set is called whenever a certificate 1920 * may be required (client or server). the callback can then examine any 1921 * appropriate parameters and setup any certificates required. This 1922 * allows advanced applications to select certificates on the fly: for 1923 * example based on supported signature algorithms or curves. 1924 */ 1925 int (*cert_cb) (SSL *ssl, void *arg); 1926 void *cert_cb_arg; 1927 /* 1928 * Optional X509_STORE for chain building or certificate validation If 1929 * NULL the parent SSL_CTX store is used instead. 1930 */ 1931 X509_STORE *chain_store; 1932 X509_STORE *verify_store; 1933 /* Custom extensions */ 1934 custom_ext_methods custext; 1935 /* Security callback */ 1936 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, 1937 void *other, void *ex); 1938 /* Security level */ 1939 int sec_level; 1940 void *sec_ex; 1941 # ifndef OPENSSL_NO_PSK 1942 /* If not NULL psk identity hint to use for servers */ 1943 char *psk_identity_hint; 1944 # endif 1945 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */ 1946 CRYPTO_RWLOCK *lock; 1947 } CERT; 1948 1949 # define FP_ICC (int (*)(const void *,const void *)) 1950 1951 /* 1952 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit 1953 * of a mess of functions, but hell, think of it as an opaque structure :-) 1954 */ 1955 typedef struct ssl3_enc_method { 1956 int (*enc) (SSL *, SSL3_RECORD *, size_t, int); 1957 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int); 1958 int (*setup_key_block) (SSL *); 1959 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *, 1960 size_t, size_t *); 1961 int (*change_cipher_state) (SSL *, int); 1962 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *); 1963 const char *client_finished_label; 1964 size_t client_finished_label_len; 1965 const char *server_finished_label; 1966 size_t server_finished_label_len; 1967 int (*alert_value) (int); 1968 int (*export_keying_material) (SSL *, unsigned char *, size_t, 1969 const char *, size_t, 1970 const unsigned char *, size_t, 1971 int use_context); 1972 /* Various flags indicating protocol version requirements */ 1973 uint32_t enc_flags; 1974 /* Set the handshake header */ 1975 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type); 1976 /* Close construction of the handshake message */ 1977 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype); 1978 /* Write out handshake message */ 1979 int (*do_write) (SSL *s); 1980 } SSL3_ENC_METHOD; 1981 1982 # define ssl_set_handshake_header(s, pkt, htype) \ 1983 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) 1984 # define ssl_close_construct_packet(s, pkt, htype) \ 1985 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) 1986 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s) 1987 1988 /* Values for enc_flags */ 1989 1990 /* Uses explicit IV for CBC mode */ 1991 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1 1992 /* Uses signature algorithms extension */ 1993 # define SSL_ENC_FLAG_SIGALGS 0x2 1994 /* Uses SHA256 default PRF */ 1995 # define SSL_ENC_FLAG_SHA256_PRF 0x4 1996 /* Is DTLS */ 1997 # define SSL_ENC_FLAG_DTLS 0x8 1998 /* 1999 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 2000 * apply to others in future. 2001 */ 2002 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10 2003 2004 # ifndef OPENSSL_NO_COMP 2005 /* Used for holding the relevant compression methods loaded into SSL_CTX */ 2006 typedef struct ssl3_comp_st { 2007 int comp_id; /* The identifier byte for this compression 2008 * type */ 2009 char *name; /* Text name used for the compression type */ 2010 COMP_METHOD *method; /* The method :-) */ 2011 } SSL3_COMP; 2012 # endif 2013 2014 typedef enum downgrade_en { 2015 DOWNGRADE_NONE, 2016 DOWNGRADE_TO_1_2, 2017 DOWNGRADE_TO_1_1 2018 } DOWNGRADE; 2019 2020 /* 2021 * Dummy status type for the status_type extension. Indicates no status type 2022 * set 2023 */ 2024 #define TLSEXT_STATUSTYPE_nothing -1 2025 2026 /* Sigalgs values */ 2027 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403 2028 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503 2029 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603 2030 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303 2031 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203 2032 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804 2033 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805 2034 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806 2035 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809 2036 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a 2037 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b 2038 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401 2039 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501 2040 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601 2041 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301 2042 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201 2043 #define TLSEXT_SIGALG_dsa_sha256 0x0402 2044 #define TLSEXT_SIGALG_dsa_sha384 0x0502 2045 #define TLSEXT_SIGALG_dsa_sha512 0x0602 2046 #define TLSEXT_SIGALG_dsa_sha224 0x0302 2047 #define TLSEXT_SIGALG_dsa_sha1 0x0202 2048 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee 2049 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef 2050 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded 2051 2052 #define TLSEXT_SIGALG_ed25519 0x0807 2053 #define TLSEXT_SIGALG_ed448 0x0808 2054 2055 /* Known PSK key exchange modes */ 2056 #define TLSEXT_KEX_MODE_KE 0x00 2057 #define TLSEXT_KEX_MODE_KE_DHE 0x01 2058 2059 /* 2060 * Internal representations of key exchange modes 2061 */ 2062 #define TLSEXT_KEX_MODE_FLAG_NONE 0 2063 #define TLSEXT_KEX_MODE_FLAG_KE 1 2064 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2 2065 2066 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \ 2067 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) 2068 2069 /* A dummy signature value not valid for TLSv1.2 signature algs */ 2070 #define TLSEXT_signature_rsa_pss 0x0101 2071 2072 /* TLSv1.3 downgrade protection sentinel values */ 2073 extern const unsigned char tls11downgrade[8]; 2074 extern const unsigned char tls12downgrade[8]; 2075 2076 extern SSL3_ENC_METHOD ssl3_undef_enc_method; 2077 2078 __owur const SSL_METHOD *ssl_bad_method(int ver); 2079 __owur const SSL_METHOD *sslv3_method(void); 2080 __owur const SSL_METHOD *sslv3_server_method(void); 2081 __owur const SSL_METHOD *sslv3_client_method(void); 2082 __owur const SSL_METHOD *tlsv1_method(void); 2083 __owur const SSL_METHOD *tlsv1_server_method(void); 2084 __owur const SSL_METHOD *tlsv1_client_method(void); 2085 __owur const SSL_METHOD *tlsv1_1_method(void); 2086 __owur const SSL_METHOD *tlsv1_1_server_method(void); 2087 __owur const SSL_METHOD *tlsv1_1_client_method(void); 2088 __owur const SSL_METHOD *tlsv1_2_method(void); 2089 __owur const SSL_METHOD *tlsv1_2_server_method(void); 2090 __owur const SSL_METHOD *tlsv1_2_client_method(void); 2091 __owur const SSL_METHOD *tlsv1_3_method(void); 2092 __owur const SSL_METHOD *tlsv1_3_server_method(void); 2093 __owur const SSL_METHOD *tlsv1_3_client_method(void); 2094 __owur const SSL_METHOD *dtlsv1_method(void); 2095 __owur const SSL_METHOD *dtlsv1_server_method(void); 2096 __owur const SSL_METHOD *dtlsv1_client_method(void); 2097 __owur const SSL_METHOD *dtls_bad_ver_client_method(void); 2098 __owur const SSL_METHOD *dtlsv1_2_method(void); 2099 __owur const SSL_METHOD *dtlsv1_2_server_method(void); 2100 __owur const SSL_METHOD *dtlsv1_2_client_method(void); 2101 2102 extern const SSL3_ENC_METHOD TLSv1_enc_data; 2103 extern const SSL3_ENC_METHOD TLSv1_1_enc_data; 2104 extern const SSL3_ENC_METHOD TLSv1_2_enc_data; 2105 extern const SSL3_ENC_METHOD TLSv1_3_enc_data; 2106 extern const SSL3_ENC_METHOD SSLv3_enc_data; 2107 extern const SSL3_ENC_METHOD DTLSv1_enc_data; 2108 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data; 2109 2110 /* 2111 * Flags for SSL methods 2112 */ 2113 # define SSL_METHOD_NO_FIPS (1U<<0) 2114 # define SSL_METHOD_NO_SUITEB (1U<<1) 2115 2116 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \ 2117 s_connect, enc_data) \ 2118 const SSL_METHOD *func_name(void) \ 2119 { \ 2120 static const SSL_METHOD func_name##_data= { \ 2121 version, \ 2122 flags, \ 2123 mask, \ 2124 tls1_new, \ 2125 tls1_clear, \ 2126 tls1_free, \ 2127 s_accept, \ 2128 s_connect, \ 2129 ssl3_read, \ 2130 ssl3_peek, \ 2131 ssl3_write, \ 2132 ssl3_shutdown, \ 2133 ssl3_renegotiate, \ 2134 ssl3_renegotiate_check, \ 2135 ssl3_read_bytes, \ 2136 ssl3_write_bytes, \ 2137 ssl3_dispatch_alert, \ 2138 ssl3_ctrl, \ 2139 ssl3_ctx_ctrl, \ 2140 ssl3_get_cipher_by_char, \ 2141 ssl3_put_cipher_by_char, \ 2142 ssl3_pending, \ 2143 ssl3_num_ciphers, \ 2144 ssl3_get_cipher, \ 2145 tls1_default_timeout, \ 2146 &enc_data, \ 2147 ssl_undefined_void_function, \ 2148 ssl3_callback_ctrl, \ 2149 ssl3_ctx_callback_ctrl, \ 2150 }; \ 2151 return &func_name##_data; \ 2152 } 2153 2154 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \ 2155 const SSL_METHOD *func_name(void) \ 2156 { \ 2157 static const SSL_METHOD func_name##_data= { \ 2158 SSL3_VERSION, \ 2159 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \ 2160 SSL_OP_NO_SSLv3, \ 2161 ssl3_new, \ 2162 ssl3_clear, \ 2163 ssl3_free, \ 2164 s_accept, \ 2165 s_connect, \ 2166 ssl3_read, \ 2167 ssl3_peek, \ 2168 ssl3_write, \ 2169 ssl3_shutdown, \ 2170 ssl3_renegotiate, \ 2171 ssl3_renegotiate_check, \ 2172 ssl3_read_bytes, \ 2173 ssl3_write_bytes, \ 2174 ssl3_dispatch_alert, \ 2175 ssl3_ctrl, \ 2176 ssl3_ctx_ctrl, \ 2177 ssl3_get_cipher_by_char, \ 2178 ssl3_put_cipher_by_char, \ 2179 ssl3_pending, \ 2180 ssl3_num_ciphers, \ 2181 ssl3_get_cipher, \ 2182 ssl3_default_timeout, \ 2183 &SSLv3_enc_data, \ 2184 ssl_undefined_void_function, \ 2185 ssl3_callback_ctrl, \ 2186 ssl3_ctx_callback_ctrl, \ 2187 }; \ 2188 return &func_name##_data; \ 2189 } 2190 2191 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \ 2192 s_connect, enc_data) \ 2193 const SSL_METHOD *func_name(void) \ 2194 { \ 2195 static const SSL_METHOD func_name##_data= { \ 2196 version, \ 2197 flags, \ 2198 mask, \ 2199 dtls1_new, \ 2200 dtls1_clear, \ 2201 dtls1_free, \ 2202 s_accept, \ 2203 s_connect, \ 2204 ssl3_read, \ 2205 ssl3_peek, \ 2206 ssl3_write, \ 2207 dtls1_shutdown, \ 2208 ssl3_renegotiate, \ 2209 ssl3_renegotiate_check, \ 2210 dtls1_read_bytes, \ 2211 dtls1_write_app_data_bytes, \ 2212 dtls1_dispatch_alert, \ 2213 dtls1_ctrl, \ 2214 ssl3_ctx_ctrl, \ 2215 ssl3_get_cipher_by_char, \ 2216 ssl3_put_cipher_by_char, \ 2217 ssl3_pending, \ 2218 ssl3_num_ciphers, \ 2219 ssl3_get_cipher, \ 2220 dtls1_default_timeout, \ 2221 &enc_data, \ 2222 ssl_undefined_void_function, \ 2223 ssl3_callback_ctrl, \ 2224 ssl3_ctx_callback_ctrl, \ 2225 }; \ 2226 return &func_name##_data; \ 2227 } 2228 2229 struct openssl_ssl_test_functions { 2230 int (*p_ssl_init_wbio_buffer) (SSL *s); 2231 int (*p_ssl3_setup_buffers) (SSL *s); 2232 }; 2233 2234 const char *ssl_protocol_to_string(int version); 2235 2236 /* Returns true if certificate and private key for 'idx' are present */ 2237 static ossl_inline int ssl_has_cert(const SSL *s, int idx) 2238 { 2239 if (idx < 0 || idx >= SSL_PKEY_NUM) 2240 return 0; 2241 return s->cert->pkeys[idx].x509 != NULL 2242 && s->cert->pkeys[idx].privatekey != NULL; 2243 } 2244 2245 static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups, 2246 size_t *pgroupslen) 2247 { 2248 *pgroups = s->ext.peer_supportedgroups; 2249 *pgroupslen = s->ext.peer_supportedgroups_len; 2250 } 2251 2252 # ifndef OPENSSL_UNIT_TEST 2253 2254 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes); 2255 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written); 2256 void ssl_clear_cipher_ctx(SSL *s); 2257 int ssl_clear_bad_session(SSL *s); 2258 __owur CERT *ssl_cert_new(void); 2259 __owur CERT *ssl_cert_dup(CERT *cert); 2260 void ssl_cert_clear_certs(CERT *c); 2261 void ssl_cert_free(CERT *c); 2262 __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss); 2263 __owur int ssl_get_new_session(SSL *s, int session); 2264 __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, 2265 size_t sess_id_len); 2266 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello); 2267 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket); 2268 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 2269 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2270 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 2271 const SSL_CIPHER *const *bp); 2272 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 2273 STACK_OF(SSL_CIPHER) *tls13_ciphersuites, 2274 STACK_OF(SSL_CIPHER) **cipher_list, 2275 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 2276 const char *rule_str, 2277 CERT *c); 2278 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format); 2279 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, 2280 STACK_OF(SSL_CIPHER) **skp, 2281 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, 2282 int fatal); 2283 void ssl_update_cache(SSL *s, int mode); 2284 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 2285 const EVP_MD **md, int *mac_pkey_type, 2286 size_t *mac_secret_size, SSL_COMP **comp, 2287 int use_etm); 2288 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, 2289 size_t *int_overhead, size_t *blocksize, 2290 size_t *ext_overhead); 2291 __owur int ssl_cert_is_disabled(size_t idx); 2292 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, 2293 const unsigned char *ptr, 2294 int all); 2295 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2296 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2297 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2298 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2299 __owur int ssl_cert_select_current(CERT *c, X509 *x); 2300 __owur int ssl_cert_set_current(CERT *c, long arg); 2301 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg); 2302 2303 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 2304 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags); 2305 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, 2306 int ref); 2307 2308 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other); 2309 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, 2310 void *other); 2311 2312 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx); 2313 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, 2314 size_t *pidx); 2315 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx); 2316 2317 int ssl_undefined_function(SSL *s); 2318 __owur int ssl_undefined_void_function(void); 2319 __owur int ssl_undefined_const_function(const SSL *s); 2320 __owur int ssl_get_server_cert_serverinfo(SSL *s, 2321 const unsigned char **serverinfo, 2322 size_t *serverinfo_length); 2323 void ssl_set_masks(SSL *s); 2324 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 2325 __owur int ssl_x509err2alert(int type); 2326 void ssl_sort_cipher_list(void); 2327 int ssl_load_ciphers(void); 2328 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, 2329 size_t len, DOWNGRADE dgrd); 2330 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen, 2331 int free_pms); 2332 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm); 2333 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, 2334 int genmaster); 2335 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); 2336 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl); 2337 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl); 2338 2339 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id); 2340 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname); 2341 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 2342 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt, 2343 size_t *len); 2344 int ssl3_init_finished_mac(SSL *s); 2345 __owur int ssl3_setup_key_block(SSL *s); 2346 __owur int ssl3_change_cipher_state(SSL *s, int which); 2347 void ssl3_cleanup_key_block(SSL *s); 2348 __owur int ssl3_do_write(SSL *s, int type); 2349 int ssl3_send_alert(SSL *s, int level, int desc); 2350 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out, 2351 unsigned char *p, size_t len, 2352 size_t *secret_size); 2353 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt); 2354 __owur int ssl3_num_ciphers(void); 2355 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 2356 int ssl3_renegotiate(SSL *ssl); 2357 int ssl3_renegotiate_check(SSL *ssl, int initok); 2358 __owur int ssl3_dispatch_alert(SSL *s); 2359 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen, 2360 unsigned char *p); 2361 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len); 2362 void ssl3_free_digest_list(SSL *s); 2363 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, 2364 CERT_PKEY *cpk); 2365 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, 2366 STACK_OF(SSL_CIPHER) *clnt, 2367 STACK_OF(SSL_CIPHER) *srvr); 2368 __owur int ssl3_digest_cached_records(SSL *s, int keep); 2369 __owur int ssl3_new(SSL *s); 2370 void ssl3_free(SSL *s); 2371 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes); 2372 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes); 2373 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written); 2374 __owur int ssl3_shutdown(SSL *s); 2375 int ssl3_clear(SSL *s); 2376 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 2377 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 2378 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void)); 2379 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void)); 2380 2381 __owur int ssl3_do_change_cipher_spec(SSL *ssl); 2382 __owur long ssl3_default_timeout(void); 2383 2384 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2385 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2386 __owur int tls_setup_handshake(SSL *s); 2387 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2388 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2389 __owur int ssl3_handshake_write(SSL *s); 2390 2391 __owur int ssl_allow_compression(SSL *s); 2392 2393 __owur int ssl_version_supported(const SSL *s, int version, 2394 const SSL_METHOD **meth); 2395 2396 __owur int ssl_set_client_hello_version(SSL *s); 2397 __owur int ssl_check_version_downgrade(SSL *s); 2398 __owur int ssl_set_version_bound(int method_version, int version, int *bound); 2399 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello, 2400 DOWNGRADE *dgrd); 2401 __owur int ssl_choose_client_version(SSL *s, int version, 2402 RAW_EXTENSION *extensions); 2403 __owur int ssl_get_min_max_version(const SSL *s, int *min_version, 2404 int *max_version, int *real_max); 2405 2406 __owur long tls1_default_timeout(void); 2407 __owur int dtls1_do_write(SSL *s, int type); 2408 void dtls1_set_message_header(SSL *s, 2409 unsigned char mt, 2410 size_t len, 2411 size_t frag_off, size_t frag_len); 2412 2413 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len, 2414 size_t *written); 2415 2416 __owur int dtls1_read_failed(SSL *s, int code); 2417 __owur int dtls1_buffer_message(SSL *s, int ccs); 2418 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found); 2419 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 2420 int dtls1_retransmit_buffered_messages(SSL *s); 2421 void dtls1_clear_received_buffer(SSL *s); 2422 void dtls1_clear_sent_buffer(SSL *s); 2423 void dtls1_get_message_header(unsigned char *data, 2424 struct hm_header_st *msg_hdr); 2425 __owur long dtls1_default_timeout(void); 2426 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft); 2427 __owur int dtls1_check_timeout_num(SSL *s); 2428 __owur int dtls1_handle_timeout(SSL *s); 2429 void dtls1_start_timer(SSL *s); 2430 void dtls1_stop_timer(SSL *s); 2431 __owur int dtls1_is_timer_expired(SSL *s); 2432 void dtls1_double_timeout(SSL *s); 2433 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, 2434 size_t cookie_len); 2435 __owur size_t dtls1_min_mtu(SSL *s); 2436 void dtls1_hm_fragment_free(hm_fragment *frag); 2437 __owur int dtls1_query_mtu(SSL *s); 2438 2439 __owur int tls1_new(SSL *s); 2440 void tls1_free(SSL *s); 2441 int tls1_clear(SSL *s); 2442 2443 __owur int dtls1_new(SSL *s); 2444 void dtls1_free(SSL *s); 2445 int dtls1_clear(SSL *s); 2446 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 2447 __owur int dtls1_shutdown(SSL *s); 2448 2449 __owur int dtls1_dispatch_alert(SSL *s); 2450 2451 __owur int ssl_init_wbio_buffer(SSL *s); 2452 int ssl_free_wbio_buffer(SSL *s); 2453 2454 __owur int tls1_change_cipher_state(SSL *s, int which); 2455 __owur int tls1_setup_key_block(SSL *s); 2456 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, 2457 unsigned char *p); 2458 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out, 2459 unsigned char *p, size_t len, 2460 size_t *secret_size); 2461 __owur int tls13_setup_key_block(SSL *s); 2462 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen, 2463 unsigned char *p); 2464 __owur int tls13_change_cipher_state(SSL *s, int which); 2465 __owur int tls13_update_key(SSL *s, int send); 2466 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md, 2467 const unsigned char *secret, 2468 const unsigned char *label, size_t labellen, 2469 const unsigned char *data, size_t datalen, 2470 unsigned char *out, size_t outlen, int fatal); 2471 __owur int tls13_derive_key(SSL *s, const EVP_MD *md, 2472 const unsigned char *secret, unsigned char *key, 2473 size_t keylen); 2474 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md, 2475 const unsigned char *secret, unsigned char *iv, 2476 size_t ivlen); 2477 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md, 2478 const unsigned char *secret, 2479 unsigned char *fin, size_t finlen); 2480 int tls13_generate_secret(SSL *s, const EVP_MD *md, 2481 const unsigned char *prevsecret, 2482 const unsigned char *insecret, 2483 size_t insecretlen, 2484 unsigned char *outsecret); 2485 __owur int tls13_generate_handshake_secret(SSL *s, 2486 const unsigned char *insecret, 2487 size_t insecretlen); 2488 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out, 2489 unsigned char *prev, size_t prevlen, 2490 size_t *secret_size); 2491 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2492 const char *label, size_t llen, 2493 const unsigned char *p, size_t plen, 2494 int use_context); 2495 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2496 const char *label, size_t llen, 2497 const unsigned char *context, 2498 size_t contextlen, int use_context); 2499 __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out, 2500 size_t olen, const char *label, 2501 size_t llen, 2502 const unsigned char *context, 2503 size_t contextlen); 2504 __owur int tls1_alert_code(int code); 2505 __owur int tls13_alert_code(int code); 2506 __owur int ssl3_alert_code(int code); 2507 2508 # ifndef OPENSSL_NO_EC 2509 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 2510 # endif 2511 2512 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); 2513 2514 # ifndef OPENSSL_NO_EC 2515 2516 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id); 2517 __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves); 2518 __owur uint16_t tls1_shared_group(SSL *s, int nmatch); 2519 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen, 2520 int *curves, size_t ncurves); 2521 __owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen, 2522 const char *str); 2523 void tls1_get_formatlist(SSL *s, const unsigned char **pformats, 2524 size_t *num_formats); 2525 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id); 2526 __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id); 2527 __owur EVP_PKEY *ssl_generate_param_group(uint16_t id); 2528 # endif /* OPENSSL_NO_EC */ 2529 2530 __owur int tls_curve_allowed(SSL *s, uint16_t curve, int op); 2531 void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, 2532 size_t *pgroupslen); 2533 2534 __owur int tls1_set_server_sigalgs(SSL *s); 2535 2536 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello, 2537 SSL_SESSION **ret); 2538 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick, 2539 size_t eticklen, 2540 const unsigned char *sess_id, 2541 size_t sesslen, SSL_SESSION **psess); 2542 2543 __owur int tls_use_ticket(SSL *s); 2544 2545 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op); 2546 2547 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client); 2548 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen, 2549 int client); 2550 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, 2551 int client); 2552 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain, 2553 int idx); 2554 void tls1_set_cert_validity(SSL *s); 2555 2556 # ifndef OPENSSL_NO_CT 2557 __owur int ssl_validate_ct(SSL *s); 2558 # endif 2559 2560 # ifndef OPENSSL_NO_DH 2561 __owur DH *ssl_get_auto_dh(SSL *s); 2562 # endif 2563 2564 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee); 2565 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, 2566 int vfy); 2567 2568 int tls_choose_sigalg(SSL *s, int fatalerrs); 2569 2570 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); 2571 void ssl_clear_hash_ctx(EVP_MD_CTX **hash); 2572 __owur long ssl_get_algorithm2(SSL *s); 2573 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt, 2574 const uint16_t *psig, size_t psiglen); 2575 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen); 2576 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert); 2577 __owur int tls1_process_sigalgs(SSL *s); 2578 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey); 2579 __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd); 2580 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs); 2581 # ifndef OPENSSL_NO_EC 2582 __owur int tls_check_sigalg_curve(const SSL *s, int curve); 2583 # endif 2584 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey); 2585 __owur int ssl_set_client_disabled(SSL *s); 2586 __owur int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int echde); 2587 2588 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, 2589 size_t *hashlen); 2590 __owur const EVP_MD *ssl_md(int idx); 2591 __owur const EVP_MD *ssl_handshake_md(SSL *s); 2592 __owur const EVP_MD *ssl_prf_md(SSL *s); 2593 2594 /* 2595 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated 2596 * with |ssl|, if logging is enabled. It returns one on success and zero on 2597 * failure. The entry is identified by the first 8 bytes of 2598 * |encrypted_premaster|. 2599 */ 2600 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl, 2601 const uint8_t *encrypted_premaster, 2602 size_t encrypted_premaster_len, 2603 const uint8_t *premaster, 2604 size_t premaster_len); 2605 2606 /* 2607 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if 2608 * logging is available. It returns one on success and zero on failure. It tags 2609 * the entry with |label|. 2610 */ 2611 __owur int ssl_log_secret(SSL *ssl, const char *label, 2612 const uint8_t *secret, size_t secret_len); 2613 2614 #define MASTER_SECRET_LABEL "CLIENT_RANDOM" 2615 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET" 2616 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET" 2617 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET" 2618 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0" 2619 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" 2620 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET" 2621 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET" 2622 2623 # ifndef OPENSSL_NO_KTLS 2624 /* ktls.c */ 2625 int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c, 2626 const EVP_CIPHER_CTX *dd); 2627 int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd, 2628 void *rl_sequence, ktls_crypto_info_t *crypto_info, 2629 unsigned char **rec_seq, unsigned char *iv, 2630 unsigned char *key, unsigned char *mac_key, 2631 size_t mac_secret_size); 2632 # endif 2633 2634 /* s3_cbc.c */ 2635 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 2636 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, 2637 unsigned char *md_out, 2638 size_t *md_out_size, 2639 const unsigned char header[13], 2640 const unsigned char *data, 2641 size_t data_plus_mac_size, 2642 size_t data_plus_mac_plus_padding_size, 2643 const unsigned char *mac_secret, 2644 size_t mac_secret_length, char is_sslv3); 2645 2646 __owur int srp_generate_server_master_secret(SSL *s); 2647 __owur int srp_generate_client_master_secret(SSL *s); 2648 __owur int srp_verify_server_param(SSL *s); 2649 2650 /* statem/statem_srvr.c */ 2651 2652 __owur int send_certificate_request(SSL *s); 2653 2654 /* statem/extensions_cust.c */ 2655 2656 custom_ext_method *custom_ext_find(const custom_ext_methods *exts, 2657 ENDPOINT role, unsigned int ext_type, 2658 size_t *idx); 2659 2660 void custom_ext_init(custom_ext_methods *meths); 2661 2662 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type, 2663 const unsigned char *ext_data, size_t ext_size, 2664 X509 *x, size_t chainidx); 2665 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x, 2666 size_t chainidx, int maxversion); 2667 2668 __owur int custom_exts_copy(custom_ext_methods *dst, 2669 const custom_ext_methods *src); 2670 __owur int custom_exts_copy_flags(custom_ext_methods *dst, 2671 const custom_ext_methods *src); 2672 void custom_exts_free(custom_ext_methods *exts); 2673 2674 void ssl_comp_free_compression_methods_int(void); 2675 2676 /* ssl_mcnf.c */ 2677 void ssl_ctx_system_config(SSL_CTX *ctx); 2678 2679 # else /* OPENSSL_UNIT_TEST */ 2680 2681 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer 2682 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers 2683 2684 # endif 2685 #endif 2686