ssl_local.h revision 1.1.1.1
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 38 # ifdef OPENSSL_BUILD_SHLIBSSL 39 # undef OPENSSL_EXTERN 40 # define OPENSSL_EXTERN OPENSSL_EXPORT 41 # endif 42 43 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ 44 l|=(((unsigned long)(*((c)++)))<< 8), \ 45 l|=(((unsigned long)(*((c)++)))<<16), \ 46 l|=(((unsigned long)(*((c)++)))<<24)) 47 48 /* NOTE - c is not incremented as per c2l */ 49 # define c2ln(c,l1,l2,n) { \ 50 c+=n; \ 51 l1=l2=0; \ 52 switch (n) { \ 53 case 8: l2 =((unsigned long)(*(--(c))))<<24; \ 54 case 7: l2|=((unsigned long)(*(--(c))))<<16; \ 55 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ 56 case 5: l2|=((unsigned long)(*(--(c)))); \ 57 case 4: l1 =((unsigned long)(*(--(c))))<<24; \ 58 case 3: l1|=((unsigned long)(*(--(c))))<<16; \ 59 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ 60 case 1: l1|=((unsigned long)(*(--(c)))); \ 61 } \ 62 } 63 64 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 65 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 66 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 67 *((c)++)=(unsigned char)(((l)>>24)&0xff)) 68 69 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ 70 l|=((unsigned long)(*((c)++)))<<16, \ 71 l|=((unsigned long)(*((c)++)))<< 8, \ 72 l|=((unsigned long)(*((c)++)))) 73 74 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \ 75 l|=((uint64_t)(*((c)++)))<<48, \ 76 l|=((uint64_t)(*((c)++)))<<40, \ 77 l|=((uint64_t)(*((c)++)))<<32, \ 78 l|=((uint64_t)(*((c)++)))<<24, \ 79 l|=((uint64_t)(*((c)++)))<<16, \ 80 l|=((uint64_t)(*((c)++)))<< 8, \ 81 l|=((uint64_t)(*((c)++)))) 82 83 84 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 85 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 86 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 87 *((c)++)=(unsigned char)(((l) )&0xff)) 88 89 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \ 90 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 91 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 92 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 93 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 94 *((c)++)=(unsigned char)(((l) )&0xff)) 95 96 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ 97 *((c)++)=(unsigned char)(((l)>>48)&0xff), \ 98 *((c)++)=(unsigned char)(((l)>>40)&0xff), \ 99 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 100 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 102 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 103 *((c)++)=(unsigned char)(((l) )&0xff)) 104 105 /* NOTE - c is not incremented as per l2c */ 106 # define l2cn(l1,l2,c,n) { \ 107 c+=n; \ 108 switch (n) { \ 109 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 110 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 111 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 112 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 113 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 114 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 115 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 116 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 117 } \ 118 } 119 120 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \ 121 (((unsigned int)((c)[1])) )),(c)+=2) 122 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \ 123 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2) 124 125 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \ 126 (((unsigned long)((c)[1]))<< 8)| \ 127 (((unsigned long)((c)[2])) )),(c)+=3) 128 129 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \ 130 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \ 131 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3) 132 133 /* 134 * DTLS version numbers are strange because they're inverted. Except for 135 * DTLS1_BAD_VER, which should be considered "lower" than the rest. 136 */ 137 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1)) 138 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2)) 139 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2)) 140 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2)) 141 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2)) 142 143 144 /* 145 * Define the Bitmasks for SSL_CIPHER.algorithms. 146 * This bits are used packed as dense as possible. If new methods/ciphers 147 * etc will be added, the bits a likely to change, so this information 148 * is for internal library use only, even though SSL_CIPHER.algorithms 149 * can be publicly accessed. 150 * Use the according functions for cipher management instead. 151 * 152 * The bit mask handling in the selection and sorting scheme in 153 * ssl_create_cipher_list() has only limited capabilities, reflecting 154 * that the different entities within are mutually exclusive: 155 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 156 */ 157 158 /* Bits for algorithm_mkey (key exchange algorithm) */ 159 /* RSA key exchange */ 160 # define SSL_kRSA 0x00000001U 161 /* tmp DH key no DH cert */ 162 # define SSL_kDHE 0x00000002U 163 /* synonym */ 164 # define SSL_kEDH SSL_kDHE 165 /* ephemeral ECDH */ 166 # define SSL_kECDHE 0x00000004U 167 /* synonym */ 168 # define SSL_kEECDH SSL_kECDHE 169 /* PSK */ 170 # define SSL_kPSK 0x00000008U 171 /* GOST key exchange */ 172 # define SSL_kGOST 0x00000010U 173 /* SRP */ 174 # define SSL_kSRP 0x00000020U 175 176 # define SSL_kRSAPSK 0x00000040U 177 # define SSL_kECDHEPSK 0x00000080U 178 # define SSL_kDHEPSK 0x00000100U 179 180 /* all PSK */ 181 182 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK) 183 184 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */ 185 # define SSL_kANY 0x00000000U 186 187 /* Bits for algorithm_auth (server authentication) */ 188 /* RSA auth */ 189 # define SSL_aRSA 0x00000001U 190 /* DSS auth */ 191 # define SSL_aDSS 0x00000002U 192 /* no auth (i.e. use ADH or AECDH) */ 193 # define SSL_aNULL 0x00000004U 194 /* ECDSA auth*/ 195 # define SSL_aECDSA 0x00000008U 196 /* PSK auth */ 197 # define SSL_aPSK 0x00000010U 198 /* GOST R 34.10-2001 signature auth */ 199 # define SSL_aGOST01 0x00000020U 200 /* SRP auth */ 201 # define SSL_aSRP 0x00000040U 202 /* GOST R 34.10-2012 signature auth */ 203 # define SSL_aGOST12 0x00000080U 204 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */ 205 # define SSL_aANY 0x00000000U 206 /* All bits requiring a certificate */ 207 #define SSL_aCERT \ 208 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12) 209 210 /* Bits for algorithm_enc (symmetric encryption) */ 211 # define SSL_DES 0x00000001U 212 # define SSL_3DES 0x00000002U 213 # define SSL_RC4 0x00000004U 214 # define SSL_RC2 0x00000008U 215 # define SSL_IDEA 0x00000010U 216 # define SSL_eNULL 0x00000020U 217 # define SSL_AES128 0x00000040U 218 # define SSL_AES256 0x00000080U 219 # define SSL_CAMELLIA128 0x00000100U 220 # define SSL_CAMELLIA256 0x00000200U 221 # define SSL_eGOST2814789CNT 0x00000400U 222 # define SSL_SEED 0x00000800U 223 # define SSL_AES128GCM 0x00001000U 224 # define SSL_AES256GCM 0x00002000U 225 # define SSL_AES128CCM 0x00004000U 226 # define SSL_AES256CCM 0x00008000U 227 # define SSL_AES128CCM8 0x00010000U 228 # define SSL_AES256CCM8 0x00020000U 229 # define SSL_eGOST2814789CNT12 0x00040000U 230 # define SSL_CHACHA20POLY1305 0x00080000U 231 # define SSL_ARIA128GCM 0x00100000U 232 # define SSL_ARIA256GCM 0x00200000U 233 234 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM) 235 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8) 236 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM) 237 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 238 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305) 239 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM) 240 # define SSL_ARIA (SSL_ARIAGCM) 241 242 /* Bits for algorithm_mac (symmetric authentication) */ 243 244 # define SSL_MD5 0x00000001U 245 # define SSL_SHA1 0x00000002U 246 # define SSL_GOST94 0x00000004U 247 # define SSL_GOST89MAC 0x00000008U 248 # define SSL_SHA256 0x00000010U 249 # define SSL_SHA384 0x00000020U 250 /* Not a real MAC, just an indication it is part of cipher */ 251 # define SSL_AEAD 0x00000040U 252 # define SSL_GOST12_256 0x00000080U 253 # define SSL_GOST89MAC12 0x00000100U 254 # define SSL_GOST12_512 0x00000200U 255 256 /* 257 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make 258 * sure to update this constant too 259 */ 260 261 # define SSL_MD_MD5_IDX 0 262 # define SSL_MD_SHA1_IDX 1 263 # define SSL_MD_GOST94_IDX 2 264 # define SSL_MD_GOST89MAC_IDX 3 265 # define SSL_MD_SHA256_IDX 4 266 # define SSL_MD_SHA384_IDX 5 267 # define SSL_MD_GOST12_256_IDX 6 268 # define SSL_MD_GOST89MAC12_IDX 7 269 # define SSL_MD_GOST12_512_IDX 8 270 # define SSL_MD_MD5_SHA1_IDX 9 271 # define SSL_MD_SHA224_IDX 10 272 # define SSL_MD_SHA512_IDX 11 273 # define SSL_MAX_DIGEST 12 274 275 /* Bits for algorithm2 (handshake digests and other extra flags) */ 276 277 /* Bits 0-7 are handshake MAC */ 278 # define SSL_HANDSHAKE_MAC_MASK 0xFF 279 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX 280 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX 281 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX 282 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX 283 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX 284 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX 285 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1 286 287 /* Bits 8-15 bits are PRF */ 288 # define TLS1_PRF_DGST_SHIFT 8 289 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 290 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT) 291 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT) 292 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT) 293 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT) 294 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT) 295 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 296 297 /* 298 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also 299 * goes into algorithm2) 300 */ 301 # define TLS1_STREAM_MAC 0x10000 302 303 # define SSL_STRONG_MASK 0x0000001FU 304 # define SSL_DEFAULT_MASK 0X00000020U 305 306 # define SSL_STRONG_NONE 0x00000001U 307 # define SSL_LOW 0x00000002U 308 # define SSL_MEDIUM 0x00000004U 309 # define SSL_HIGH 0x00000008U 310 # define SSL_FIPS 0x00000010U 311 # define SSL_NOT_DEFAULT 0x00000020U 312 313 /* we have used 0000003f - 26 bits left to go */ 314 315 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */ 316 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000 317 318 /* Check if an SSL structure is using DTLS */ 319 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) 320 321 /* Check if we are using TLSv1.3 */ 322 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \ 323 && (s)->method->version >= TLS1_3_VERSION \ 324 && (s)->method->version != TLS_ANY_VERSION) 325 326 # define SSL_TREAT_AS_TLS13(s) \ 327 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \ 328 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \ 329 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ 330 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \ 331 || (s)->hello_retry_request == SSL_HRR_PENDING) 332 333 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \ 334 || (s)->s3->tmp.peer_finish_md_len == 0) 335 336 /* See if we need explicit IV */ 337 # define SSL_USE_EXPLICIT_IV(s) \ 338 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 339 /* 340 * See if we use signature algorithms extension and signature algorithm 341 * before signatures. 342 */ 343 # define SSL_USE_SIGALGS(s) \ 344 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 345 /* 346 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 347 * apply to others in future. 348 */ 349 # define SSL_USE_TLS1_2_CIPHERS(s) \ 350 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 351 /* 352 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method 353 * flags because it may not be set to correct version yet. 354 */ 355 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ 356 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \ 357 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION))) 358 /* 359 * Determine if a client should send signature algorithms extension: 360 * as with TLS1.2 cipher we can't rely on method flags. 361 */ 362 # define SSL_CLIENT_USE_SIGALGS(s) \ 363 SSL_CLIENT_USE_TLS1_2_CIPHERS(s) 364 365 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \ 366 (((value) >= TLSEXT_max_fragment_length_512) && \ 367 ((value) <= TLSEXT_max_fragment_length_4096)) 368 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \ 369 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode) 370 # define GET_MAX_FRAGMENT_LENGTH(session) \ 371 (512U << (session->ext.max_fragment_len_mode - 1)) 372 373 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ) 374 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE) 375 376 /* Mostly for SSLv3 */ 377 # define SSL_PKEY_RSA 0 378 # define SSL_PKEY_RSA_PSS_SIGN 1 379 # define SSL_PKEY_DSA_SIGN 2 380 # define SSL_PKEY_ECC 3 381 # define SSL_PKEY_GOST01 4 382 # define SSL_PKEY_GOST12_256 5 383 # define SSL_PKEY_GOST12_512 6 384 # define SSL_PKEY_ED25519 7 385 # define SSL_PKEY_ED448 8 386 # define SSL_PKEY_NUM 9 387 388 /*- 389 * SSL_kRSA <- RSA_ENC 390 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 391 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 392 * SSL_aRSA <- RSA_ENC | RSA_SIGN 393 * SSL_aDSS <- DSA_SIGN 394 */ 395 396 /*- 397 #define CERT_INVALID 0 398 #define CERT_PUBLIC_KEY 1 399 #define CERT_PRIVATE_KEY 2 400 */ 401 402 /* Post-Handshake Authentication state */ 403 typedef enum { 404 SSL_PHA_NONE = 0, 405 SSL_PHA_EXT_SENT, /* client-side only: extension sent */ 406 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */ 407 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */ 408 SSL_PHA_REQUESTED /* request received by client, or sent by server */ 409 } SSL_PHA_STATE; 410 411 /* CipherSuite length. SSLv3 and all TLS versions. */ 412 # define TLS_CIPHER_LEN 2 413 /* used to hold info on the particular ciphers used */ 414 struct ssl_cipher_st { 415 uint32_t valid; 416 const char *name; /* text name */ 417 const char *stdname; /* RFC name */ 418 uint32_t id; /* id, 4 bytes, first is version */ 419 /* 420 * changed in 1.0.0: these four used to be portions of a single value 421 * 'algorithms' 422 */ 423 uint32_t algorithm_mkey; /* key exchange algorithm */ 424 uint32_t algorithm_auth; /* server authentication */ 425 uint32_t algorithm_enc; /* symmetric encryption */ 426 uint32_t algorithm_mac; /* symmetric authentication */ 427 int min_tls; /* minimum SSL/TLS protocol version */ 428 int max_tls; /* maximum SSL/TLS protocol version */ 429 int min_dtls; /* minimum DTLS protocol version */ 430 int max_dtls; /* maximum DTLS protocol version */ 431 uint32_t algo_strength; /* strength and export flags */ 432 uint32_t algorithm2; /* Extra flags */ 433 int32_t strength_bits; /* Number of bits really used */ 434 uint32_t alg_bits; /* Number of bits for algorithm */ 435 }; 436 437 /* Used to hold SSL/TLS functions */ 438 struct ssl_method_st { 439 int version; 440 unsigned flags; 441 unsigned long mask; 442 int (*ssl_new) (SSL *s); 443 int (*ssl_clear) (SSL *s); 444 void (*ssl_free) (SSL *s); 445 int (*ssl_accept) (SSL *s); 446 int (*ssl_connect) (SSL *s); 447 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes); 448 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes); 449 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written); 450 int (*ssl_shutdown) (SSL *s); 451 int (*ssl_renegotiate) (SSL *s); 452 int (*ssl_renegotiate_check) (SSL *s, int); 453 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type, 454 unsigned char *buf, size_t len, int peek, 455 size_t *readbytes); 456 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len, 457 size_t *written); 458 int (*ssl_dispatch_alert) (SSL *s); 459 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg); 460 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg); 461 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr); 462 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt, 463 size_t *len); 464 size_t (*ssl_pending) (const SSL *s); 465 int (*num_ciphers) (void); 466 const SSL_CIPHER *(*get_cipher) (unsigned ncipher); 467 long (*get_timeout) (void); 468 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 469 int (*ssl_version) (void); 470 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void)); 471 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void)); 472 }; 473 474 /* 475 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for 476 * consistency, even in the event of OPENSSL_NO_PSK being defined. 477 */ 478 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 256 479 480 /*- 481 * Lets make this into an ASN.1 type structure as follows 482 * SSL_SESSION_ID ::= SEQUENCE { 483 * version INTEGER, -- structure version number 484 * SSLversion INTEGER, -- SSL version number 485 * Cipher OCTET STRING, -- the 3 byte cipher ID 486 * Session_ID OCTET STRING, -- the Session ID 487 * Master_key OCTET STRING, -- the master key 488 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument 489 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time 490 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds 491 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate 492 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context 493 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' 494 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension 495 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint 496 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity 497 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket 498 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) 499 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method 500 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username 501 * flags [ 13 ] EXPLICIT INTEGER -- optional flags 502 * } 503 * Look in ssl/ssl_asn1.c for more details 504 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). 505 */ 506 struct ssl_session_st { 507 int ssl_version; /* what ssl version session info is being kept 508 * in here? */ 509 size_t master_key_length; 510 511 /* TLSv1.3 early_secret used for external PSKs */ 512 unsigned char early_secret[EVP_MAX_MD_SIZE]; 513 /* 514 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption 515 * PSK 516 */ 517 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH]; 518 /* session_id - valid? */ 519 size_t session_id_length; 520 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 521 /* 522 * this is used to determine whether the session is being reused in the 523 * appropriate context. It is up to the application to set this, via 524 * SSL_new 525 */ 526 size_t sid_ctx_length; 527 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 528 # ifndef OPENSSL_NO_PSK 529 char *psk_identity_hint; 530 char *psk_identity; 531 # endif 532 /* 533 * Used to indicate that session resumption is not allowed. Applications 534 * can also set this bit for a new session via not_resumable_session_cb 535 * to disable session caching and tickets. 536 */ 537 int not_resumable; 538 /* This is the cert and type for the other end. */ 539 X509 *peer; 540 int peer_type; 541 /* Certificate chain peer sent. */ 542 STACK_OF(X509) *peer_chain; 543 /* 544 * when app_verify_callback accepts a session where the peer's 545 * certificate is not ok, we must remember the error for session reuse: 546 */ 547 long verify_result; /* only for servers */ 548 CRYPTO_REF_COUNT references; 549 long timeout; 550 long time; 551 unsigned int compress_meth; /* Need to lookup the method */ 552 const SSL_CIPHER *cipher; 553 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to 554 * load the 'cipher' structure */ 555 CRYPTO_EX_DATA ex_data; /* application specific data */ 556 /* 557 * These are used to make removal of session-ids more efficient and to 558 * implement a maximum cache size. 559 */ 560 struct ssl_session_st *prev, *next; 561 562 struct { 563 char *hostname; 564 /* RFC4507 info */ 565 unsigned char *tick; /* Session ticket */ 566 size_t ticklen; /* Session ticket length */ 567 /* Session lifetime hint in seconds */ 568 unsigned long tick_lifetime_hint; 569 uint32_t tick_age_add; 570 /* Max number of bytes that can be sent as early data */ 571 uint32_t max_early_data; 572 /* The ALPN protocol selected for this session */ 573 unsigned char *alpn_selected; 574 size_t alpn_selected_len; 575 /* 576 * Maximum Fragment Length as per RFC 4366. 577 * If this value does not contain RFC 4366 allowed values (1-4) then 578 * either the Maximum Fragment Length Negotiation failed or was not 579 * performed at all. 580 */ 581 uint8_t max_fragment_len_mode; 582 } ext; 583 # ifndef OPENSSL_NO_SRP 584 char *srp_username; 585 # endif 586 unsigned char *ticket_appdata; 587 size_t ticket_appdata_len; 588 uint32_t flags; 589 CRYPTO_RWLOCK *lock; 590 }; 591 592 /* Extended master secret support */ 593 # define SSL_SESS_FLAG_EXTMS 0x1 594 595 # ifndef OPENSSL_NO_SRP 596 597 typedef struct srp_ctx_st { 598 /* param for all the callbacks */ 599 void *SRP_cb_arg; 600 /* set client Hello login callback */ 601 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *); 602 /* set SRP N/g param callback for verification */ 603 int (*SRP_verify_param_callback) (SSL *, void *); 604 /* set SRP client passwd callback */ 605 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *); 606 char *login; 607 BIGNUM *N, *g, *s, *B, *A; 608 BIGNUM *a, *b, *v; 609 char *info; 610 int strength; 611 unsigned long srp_Mask; 612 } SRP_CTX; 613 614 # endif 615 616 typedef enum { 617 SSL_EARLY_DATA_NONE = 0, 618 SSL_EARLY_DATA_CONNECT_RETRY, 619 SSL_EARLY_DATA_CONNECTING, 620 SSL_EARLY_DATA_WRITE_RETRY, 621 SSL_EARLY_DATA_WRITING, 622 SSL_EARLY_DATA_WRITE_FLUSH, 623 SSL_EARLY_DATA_UNAUTH_WRITING, 624 SSL_EARLY_DATA_FINISHED_WRITING, 625 SSL_EARLY_DATA_ACCEPT_RETRY, 626 SSL_EARLY_DATA_ACCEPTING, 627 SSL_EARLY_DATA_READ_RETRY, 628 SSL_EARLY_DATA_READING, 629 SSL_EARLY_DATA_FINISHED_READING 630 } SSL_EARLY_DATA_STATE; 631 632 /* 633 * We check that the amount of unreadable early data doesn't exceed 634 * max_early_data. max_early_data is given in plaintext bytes. However if it is 635 * unreadable then we only know the number of ciphertext bytes. We also don't 636 * know how much the overhead should be because it depends on the ciphersuite. 637 * We make a small allowance. We assume 5 records of actual data plus the end 638 * of early data alert record. Each record has a tag and a content type byte. 639 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the 640 * content of the alert record either which is 2 bytes. 641 */ 642 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2) 643 644 /* 645 * The allowance we have between the client's calculated ticket age and our own. 646 * We allow for 10 seconds (units are in ms). If a ticket is presented and the 647 * client's age calculation is different by more than this than our own then we 648 * do not allow that ticket for early_data. 649 */ 650 # define TICKET_AGE_ALLOWANCE (10 * 1000) 651 652 #define MAX_COMPRESSIONS_SIZE 255 653 654 struct ssl_comp_st { 655 int id; 656 const char *name; 657 COMP_METHOD *method; 658 }; 659 660 typedef struct raw_extension_st { 661 /* Raw packet data for the extension */ 662 PACKET data; 663 /* Set to 1 if the extension is present or 0 otherwise */ 664 int present; 665 /* Set to 1 if we have already parsed the extension or 0 otherwise */ 666 int parsed; 667 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */ 668 unsigned int type; 669 /* Track what order extensions are received in (0-based). */ 670 size_t received_order; 671 } RAW_EXTENSION; 672 673 typedef struct { 674 unsigned int isv2; 675 unsigned int legacy_version; 676 unsigned char random[SSL3_RANDOM_SIZE]; 677 size_t session_id_len; 678 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 679 size_t dtls_cookie_len; 680 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH]; 681 PACKET ciphersuites; 682 size_t compressions_len; 683 unsigned char compressions[MAX_COMPRESSIONS_SIZE]; 684 PACKET extensions; 685 size_t pre_proc_exts_len; 686 RAW_EXTENSION *pre_proc_exts; 687 } CLIENTHELLO_MSG; 688 689 /* 690 * Extension index values NOTE: Any updates to these defines should be mirrored 691 * with equivalent updates to ext_defs in extensions.c 692 */ 693 typedef enum tlsext_index_en { 694 TLSEXT_IDX_renegotiate, 695 TLSEXT_IDX_server_name, 696 TLSEXT_IDX_max_fragment_length, 697 TLSEXT_IDX_srp, 698 TLSEXT_IDX_ec_point_formats, 699 TLSEXT_IDX_supported_groups, 700 TLSEXT_IDX_session_ticket, 701 TLSEXT_IDX_status_request, 702 TLSEXT_IDX_next_proto_neg, 703 TLSEXT_IDX_application_layer_protocol_negotiation, 704 TLSEXT_IDX_use_srtp, 705 TLSEXT_IDX_encrypt_then_mac, 706 TLSEXT_IDX_signed_certificate_timestamp, 707 TLSEXT_IDX_extended_master_secret, 708 TLSEXT_IDX_signature_algorithms_cert, 709 TLSEXT_IDX_post_handshake_auth, 710 TLSEXT_IDX_signature_algorithms, 711 TLSEXT_IDX_supported_versions, 712 TLSEXT_IDX_psk_kex_modes, 713 TLSEXT_IDX_key_share, 714 TLSEXT_IDX_cookie, 715 TLSEXT_IDX_cryptopro_bug, 716 TLSEXT_IDX_early_data, 717 TLSEXT_IDX_certificate_authorities, 718 TLSEXT_IDX_padding, 719 TLSEXT_IDX_psk, 720 /* Dummy index - must always be the last entry */ 721 TLSEXT_IDX_num_builtins 722 } TLSEXT_INDEX; 723 724 DEFINE_LHASH_OF(SSL_SESSION); 725 /* Needed in ssl_cert.c */ 726 DEFINE_LHASH_OF(X509_NAME); 727 728 # define TLSEXT_KEYNAME_LENGTH 16 729 # define TLSEXT_TICK_KEY_LENGTH 32 730 731 typedef struct ssl_ctx_ext_secure_st { 732 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; 733 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; 734 } SSL_CTX_EXT_SECURE; 735 736 struct ssl_ctx_st { 737 const SSL_METHOD *method; 738 STACK_OF(SSL_CIPHER) *cipher_list; 739 /* same as above but sorted for lookup */ 740 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 741 /* TLSv1.3 specific ciphersuites */ 742 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 743 struct x509_store_st /* X509_STORE */ *cert_store; 744 LHASH_OF(SSL_SESSION) *sessions; 745 /* 746 * Most session-ids that will be cached, default is 747 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. 748 */ 749 size_t session_cache_size; 750 struct ssl_session_st *session_cache_head; 751 struct ssl_session_st *session_cache_tail; 752 /* 753 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT, 754 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which 755 * means only SSL_accept will cache SSL_SESSIONS. 756 */ 757 uint32_t session_cache_mode; 758 /* 759 * If timeout is not 0, it is the default timeout value set when 760 * SSL_new() is called. This has been put in to make life easier to set 761 * things up 762 */ 763 long session_timeout; 764 /* 765 * If this callback is not null, it will be called each time a session id 766 * is added to the cache. If this function returns 1, it means that the 767 * callback will do a SSL_SESSION_free() when it has finished using it. 768 * Otherwise, on 0, it means the callback has finished with it. If 769 * remove_session_cb is not null, it will be called when a session-id is 770 * removed from the cache. After the call, OpenSSL will 771 * SSL_SESSION_free() it. 772 */ 773 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess); 774 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess); 775 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl, 776 const unsigned char *data, int len, 777 int *copy); 778 struct { 779 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */ 780 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */ 781 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */ 782 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */ 783 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */ 784 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */ 785 TSAN_QUALIFIER int sess_miss; /* session lookup misses */ 786 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */ 787 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */ 788 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */ 789 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in 790 * the cache was passed back via 791 * the callback. This indicates 792 * that the application is 793 * supplying session-id's from 794 * other processes - spooky 795 * :-) */ 796 } stats; 797 798 CRYPTO_REF_COUNT references; 799 800 /* if defined, these override the X509_verify_cert() calls */ 801 int (*app_verify_callback) (X509_STORE_CTX *, void *); 802 void *app_verify_arg; 803 /* 804 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored 805 * ('app_verify_callback' was called with just one argument) 806 */ 807 808 /* Default password callback. */ 809 pem_password_cb *default_passwd_callback; 810 811 /* Default password callback user data. */ 812 void *default_passwd_callback_userdata; 813 814 /* get client cert callback */ 815 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey); 816 817 /* cookie generate callback */ 818 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie, 819 unsigned int *cookie_len); 820 821 /* verify cookie callback */ 822 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie, 823 unsigned int cookie_len); 824 825 /* TLS1.3 app-controlled cookie generate callback */ 826 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie, 827 size_t *cookie_len); 828 829 /* TLS1.3 verify app-controlled cookie callback */ 830 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie, 831 size_t cookie_len); 832 833 CRYPTO_EX_DATA ex_data; 834 835 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */ 836 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */ 837 838 STACK_OF(X509) *extra_certs; 839 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */ 840 841 /* Default values used when no per-SSL value is defined follow */ 842 843 /* used if SSL's info_callback is NULL */ 844 void (*info_callback) (const SSL *ssl, int type, int val); 845 846 /* 847 * What we put in certificate_authorities extension for TLS 1.3 848 * (ClientHello and CertificateRequest) or just client cert requests for 849 * earlier versions. If client_ca_names is populated then it is only used 850 * for client cert requests, and in preference to ca_names. 851 */ 852 STACK_OF(X509_NAME) *ca_names; 853 STACK_OF(X509_NAME) *client_ca_names; 854 855 /* 856 * Default values to use in SSL structures follow (these are copied by 857 * SSL_new) 858 */ 859 860 uint32_t options; 861 uint32_t mode; 862 int min_proto_version; 863 int max_proto_version; 864 size_t max_cert_list; 865 866 struct cert_st /* CERT */ *cert; 867 int read_ahead; 868 869 /* callback that allows applications to peek at protocol messages */ 870 void (*msg_callback) (int write_p, int version, int content_type, 871 const void *buf, size_t len, SSL *ssl, void *arg); 872 void *msg_callback_arg; 873 874 uint32_t verify_mode; 875 size_t sid_ctx_length; 876 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 877 /* called 'verify_callback' in the SSL */ 878 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx); 879 880 /* Default generate session ID callback. */ 881 GEN_SESSION_CB generate_session_id; 882 883 X509_VERIFY_PARAM *param; 884 885 int quiet_shutdown; 886 887 # ifndef OPENSSL_NO_CT 888 CTLOG_STORE *ctlog_store; /* CT Log Store */ 889 /* 890 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 891 * If they are not, the connection should be aborted. 892 */ 893 ssl_ct_validation_cb ct_validation_callback; 894 void *ct_validation_callback_arg; 895 # endif 896 897 /* 898 * If we're using more than one pipeline how should we divide the data 899 * up between the pipes? 900 */ 901 size_t split_send_fragment; 902 /* 903 * Maximum amount of data to send in one fragment. actual record size can 904 * be more than this due to padding and MAC overheads. 905 */ 906 size_t max_send_fragment; 907 908 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 909 size_t max_pipelines; 910 911 /* The default read buffer length to use (0 means not set) */ 912 size_t default_read_buf_len; 913 914 # ifndef OPENSSL_NO_ENGINE 915 /* 916 * Engine to pass requests for client certs to 917 */ 918 ENGINE *client_cert_engine; 919 # endif 920 921 /* ClientHello callback. Mostly for extensions, but not entirely. */ 922 SSL_client_hello_cb_fn client_hello_cb; 923 void *client_hello_cb_arg; 924 925 /* TLS extensions. */ 926 struct { 927 /* TLS extensions servername callback */ 928 int (*servername_cb) (SSL *, int *, void *); 929 void *servername_arg; 930 /* RFC 4507 session ticket keys */ 931 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; 932 SSL_CTX_EXT_SECURE *secure; 933 /* Callback to support customisation of ticket key setting */ 934 int (*ticket_key_cb) (SSL *ssl, 935 unsigned char *name, unsigned char *iv, 936 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 937 938 /* certificate status request info */ 939 /* Callback for status request */ 940 int (*status_cb) (SSL *ssl, void *arg); 941 void *status_arg; 942 /* ext status type used for CSR extension (OCSP Stapling) */ 943 int status_type; 944 /* RFC 4366 Maximum Fragment Length Negotiation */ 945 uint8_t max_fragment_len_mode; 946 947 # ifndef OPENSSL_NO_EC 948 /* EC extension values inherited by SSL structure */ 949 size_t ecpointformats_len; 950 unsigned char *ecpointformats; 951 size_t supportedgroups_len; 952 uint16_t *supportedgroups; 953 # endif /* OPENSSL_NO_EC */ 954 955 /* 956 * ALPN information (we are in the process of transitioning from NPN to 957 * ALPN.) 958 */ 959 960 /*- 961 * For a server, this contains a callback function that allows the 962 * server to select the protocol for the connection. 963 * out: on successful return, this must point to the raw protocol 964 * name (without the length prefix). 965 * outlen: on successful return, this contains the length of |*out|. 966 * in: points to the client's list of supported protocols in 967 * wire-format. 968 * inlen: the length of |in|. 969 */ 970 int (*alpn_select_cb) (SSL *s, 971 const unsigned char **out, 972 unsigned char *outlen, 973 const unsigned char *in, 974 unsigned int inlen, void *arg); 975 void *alpn_select_cb_arg; 976 977 /* 978 * For a client, this contains the list of supported protocols in wire 979 * format. 980 */ 981 unsigned char *alpn; 982 size_t alpn_len; 983 984 # ifndef OPENSSL_NO_NEXTPROTONEG 985 /* Next protocol negotiation information */ 986 987 /* 988 * For a server, this contains a callback function by which the set of 989 * advertised protocols can be provided. 990 */ 991 SSL_CTX_npn_advertised_cb_func npn_advertised_cb; 992 void *npn_advertised_cb_arg; 993 /* 994 * For a client, this contains a callback function that selects the next 995 * protocol from the list provided by the server. 996 */ 997 SSL_CTX_npn_select_cb_func npn_select_cb; 998 void *npn_select_cb_arg; 999 # endif 1000 1001 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH]; 1002 } ext; 1003 1004 # ifndef OPENSSL_NO_PSK 1005 SSL_psk_client_cb_func psk_client_callback; 1006 SSL_psk_server_cb_func psk_server_callback; 1007 # endif 1008 SSL_psk_find_session_cb_func psk_find_session_cb; 1009 SSL_psk_use_session_cb_func psk_use_session_cb; 1010 1011 # ifndef OPENSSL_NO_SRP 1012 SRP_CTX srp_ctx; /* ctx for SRP authentication */ 1013 # endif 1014 1015 /* Shared DANE context */ 1016 struct dane_ctx_st dane; 1017 1018 # ifndef OPENSSL_NO_SRTP 1019 /* SRTP profiles we are willing to do from RFC 5764 */ 1020 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1021 # endif 1022 /* 1023 * Callback for disabling session caching and ticket support on a session 1024 * basis, depending on the chosen cipher. 1025 */ 1026 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1027 1028 CRYPTO_RWLOCK *lock; 1029 1030 /* 1031 * Callback for logging key material for use with debugging tools like 1032 * Wireshark. The callback should log `line` followed by a newline. 1033 */ 1034 SSL_CTX_keylog_cb_func keylog_callback; 1035 1036 /* 1037 * The maximum number of bytes advertised in session tickets that can be 1038 * sent as early data. 1039 */ 1040 uint32_t max_early_data; 1041 1042 /* 1043 * The maximum number of bytes of early data that a server will tolerate 1044 * (which should be at least as much as max_early_data). 1045 */ 1046 uint32_t recv_max_early_data; 1047 1048 /* TLS1.3 padding callback */ 1049 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1050 void *record_padding_arg; 1051 size_t block_padding; 1052 1053 /* Session ticket appdata */ 1054 SSL_CTX_generate_session_ticket_fn generate_ticket_cb; 1055 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb; 1056 void *ticket_cb_data; 1057 1058 /* The number of TLS1.3 tickets to automatically send */ 1059 size_t num_tickets; 1060 1061 /* Callback to determine if early_data is acceptable or not */ 1062 SSL_allow_early_data_cb_fn allow_early_data_cb; 1063 void *allow_early_data_cb_data; 1064 1065 /* Do we advertise Post-handshake auth support? */ 1066 int pha_enabled; 1067 }; 1068 1069 struct ssl_st { 1070 /* 1071 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, 1072 * DTLS1_VERSION) 1073 */ 1074 int version; 1075 /* SSLv3 */ 1076 const SSL_METHOD *method; 1077 /* 1078 * There are 2 BIO's even though they are normally both the same. This 1079 * is so data can be read and written to different handlers 1080 */ 1081 /* used by SSL_read */ 1082 BIO *rbio; 1083 /* used by SSL_write */ 1084 BIO *wbio; 1085 /* used during session-id reuse to concatenate messages */ 1086 BIO *bbio; 1087 /* 1088 * This holds a variable that indicates what we were doing when a 0 or -1 1089 * is returned. This is needed for non-blocking IO so we know what 1090 * request needs re-doing when in SSL_accept or SSL_connect 1091 */ 1092 int rwstate; 1093 int (*handshake_func) (SSL *); 1094 /* 1095 * Imagine that here's a boolean member "init" that is switched as soon 1096 * as SSL_set_{accept/connect}_state is called for the first time, so 1097 * that "state" and "handshake_func" are properly initialized. But as 1098 * handshake_func is == 0 until then, we use this test instead of an 1099 * "init" member. 1100 */ 1101 /* are we the server side? */ 1102 int server; 1103 /* 1104 * Generate a new session or reuse an old one. 1105 * NB: For servers, the 'new' session may actually be a previously 1106 * cached session or even the previous session unless 1107 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set 1108 */ 1109 int new_session; 1110 /* don't send shutdown packets */ 1111 int quiet_shutdown; 1112 /* we have shut things down, 0x01 sent, 0x02 for received */ 1113 int shutdown; 1114 /* where we are */ 1115 OSSL_STATEM statem; 1116 SSL_EARLY_DATA_STATE early_data_state; 1117 BUF_MEM *init_buf; /* buffer used during init */ 1118 void *init_msg; /* pointer to handshake message body, set by 1119 * ssl3_get_message() */ 1120 size_t init_num; /* amount read/written */ 1121 size_t init_off; /* amount read/written */ 1122 struct ssl3_state_st *s3; /* SSLv3 variables */ 1123 struct dtls1_state_st *d1; /* DTLSv1 variables */ 1124 /* callback that allows applications to peek at protocol messages */ 1125 void (*msg_callback) (int write_p, int version, int content_type, 1126 const void *buf, size_t len, SSL *ssl, void *arg); 1127 void *msg_callback_arg; 1128 int hit; /* reusing a previous session */ 1129 X509_VERIFY_PARAM *param; 1130 /* Per connection DANE state */ 1131 SSL_DANE dane; 1132 /* crypto */ 1133 STACK_OF(SSL_CIPHER) *peer_ciphers; 1134 STACK_OF(SSL_CIPHER) *cipher_list; 1135 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 1136 /* TLSv1.3 specific ciphersuites */ 1137 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 1138 /* 1139 * These are the ones being used, the ones in SSL_SESSION are the ones to 1140 * be 'copied' into these ones 1141 */ 1142 uint32_t mac_flags; 1143 /* 1144 * The TLS1.3 secrets. 1145 */ 1146 unsigned char early_secret[EVP_MAX_MD_SIZE]; 1147 unsigned char handshake_secret[EVP_MAX_MD_SIZE]; 1148 unsigned char master_secret[EVP_MAX_MD_SIZE]; 1149 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE]; 1150 unsigned char client_finished_secret[EVP_MAX_MD_SIZE]; 1151 unsigned char server_finished_secret[EVP_MAX_MD_SIZE]; 1152 unsigned char server_finished_hash[EVP_MAX_MD_SIZE]; 1153 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE]; 1154 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE]; 1155 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE]; 1156 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE]; 1157 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE]; 1158 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */ 1159 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */ 1160 EVP_MD_CTX *read_hash; /* used for mac generation */ 1161 COMP_CTX *compress; /* compression */ 1162 COMP_CTX *expand; /* uncompress */ 1163 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1164 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */ 1165 EVP_MD_CTX *write_hash; /* used for mac generation */ 1166 /* session info */ 1167 /* client cert? */ 1168 /* This is used to hold the server certificate used */ 1169 struct cert_st /* CERT */ *cert; 1170 1171 /* 1172 * The hash of all messages prior to the CertificateVerify, and the length 1173 * of that hash. 1174 */ 1175 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE]; 1176 size_t cert_verify_hash_len; 1177 1178 /* Flag to indicate whether we should send a HelloRetryRequest or not */ 1179 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE} 1180 hello_retry_request; 1181 1182 /* 1183 * the session_id_context is used to ensure sessions are only reused in 1184 * the appropriate context 1185 */ 1186 size_t sid_ctx_length; 1187 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 1188 /* This can also be in the session once a session is established */ 1189 SSL_SESSION *session; 1190 /* TLSv1.3 PSK session */ 1191 SSL_SESSION *psksession; 1192 unsigned char *psksession_id; 1193 size_t psksession_id_len; 1194 /* Default generate session ID callback. */ 1195 GEN_SESSION_CB generate_session_id; 1196 /* 1197 * The temporary TLSv1.3 session id. This isn't really a session id at all 1198 * but is a random value sent in the legacy session id field. 1199 */ 1200 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 1201 size_t tmp_session_id_len; 1202 /* Used in SSL3 */ 1203 /* 1204 * 0 don't care about verify failure. 1205 * 1 fail if verify fails 1206 */ 1207 uint32_t verify_mode; 1208 /* fail if callback returns 0 */ 1209 int (*verify_callback) (int ok, X509_STORE_CTX *ctx); 1210 /* optional informational callback */ 1211 void (*info_callback) (const SSL *ssl, int type, int val); 1212 /* error bytes to be written */ 1213 int error; 1214 /* actual code */ 1215 int error_code; 1216 # ifndef OPENSSL_NO_PSK 1217 SSL_psk_client_cb_func psk_client_callback; 1218 SSL_psk_server_cb_func psk_server_callback; 1219 # endif 1220 SSL_psk_find_session_cb_func psk_find_session_cb; 1221 SSL_psk_use_session_cb_func psk_use_session_cb; 1222 1223 SSL_CTX *ctx; 1224 /* Verified chain of peer */ 1225 STACK_OF(X509) *verified_chain; 1226 long verify_result; 1227 /* extra application data */ 1228 CRYPTO_EX_DATA ex_data; 1229 /* 1230 * What we put in certificate_authorities extension for TLS 1.3 1231 * (ClientHello and CertificateRequest) or just client cert requests for 1232 * earlier versions. If client_ca_names is populated then it is only used 1233 * for client cert requests, and in preference to ca_names. 1234 */ 1235 STACK_OF(X509_NAME) *ca_names; 1236 STACK_OF(X509_NAME) *client_ca_names; 1237 CRYPTO_REF_COUNT references; 1238 /* protocol behaviour */ 1239 uint32_t options; 1240 /* API behaviour */ 1241 uint32_t mode; 1242 int min_proto_version; 1243 int max_proto_version; 1244 size_t max_cert_list; 1245 int first_packet; 1246 /* 1247 * What was passed in ClientHello.legacy_version. Used for RSA pre-master 1248 * secret and SSLv3/TLS (<=1.2) rollback check 1249 */ 1250 int client_version; 1251 /* 1252 * If we're using more than one pipeline how should we divide the data 1253 * up between the pipes? 1254 */ 1255 size_t split_send_fragment; 1256 /* 1257 * Maximum amount of data to send in one fragment. actual record size can 1258 * be more than this due to padding and MAC overheads. 1259 */ 1260 size_t max_send_fragment; 1261 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 1262 size_t max_pipelines; 1263 1264 struct { 1265 /* Built-in extension flags */ 1266 uint8_t extflags[TLSEXT_IDX_num_builtins]; 1267 /* TLS extension debug callback */ 1268 void (*debug_cb)(SSL *s, int client_server, int type, 1269 const unsigned char *data, int len, void *arg); 1270 void *debug_arg; 1271 char *hostname; 1272 /* certificate status request info */ 1273 /* Status type or -1 if no status type */ 1274 int status_type; 1275 /* Raw extension data, if seen */ 1276 unsigned char *scts; 1277 /* Length of raw extension data, if seen */ 1278 uint16_t scts_len; 1279 /* Expect OCSP CertificateStatus message */ 1280 int status_expected; 1281 1282 struct { 1283 /* OCSP status request only */ 1284 STACK_OF(OCSP_RESPID) *ids; 1285 X509_EXTENSIONS *exts; 1286 /* OCSP response received or to be sent */ 1287 unsigned char *resp; 1288 size_t resp_len; 1289 } ocsp; 1290 1291 /* RFC4507 session ticket expected to be received or sent */ 1292 int ticket_expected; 1293 # ifndef OPENSSL_NO_EC 1294 size_t ecpointformats_len; 1295 /* our list */ 1296 unsigned char *ecpointformats; 1297 1298 size_t peer_ecpointformats_len; 1299 /* peer's list */ 1300 unsigned char *peer_ecpointformats; 1301 # endif /* OPENSSL_NO_EC */ 1302 size_t supportedgroups_len; 1303 /* our list */ 1304 uint16_t *supportedgroups; 1305 1306 size_t peer_supportedgroups_len; 1307 /* peer's list */ 1308 uint16_t *peer_supportedgroups; 1309 1310 /* TLS Session Ticket extension override */ 1311 TLS_SESSION_TICKET_EXT *session_ticket; 1312 /* TLS Session Ticket extension callback */ 1313 tls_session_ticket_ext_cb_fn session_ticket_cb; 1314 void *session_ticket_cb_arg; 1315 /* TLS pre-shared secret session resumption */ 1316 tls_session_secret_cb_fn session_secret_cb; 1317 void *session_secret_cb_arg; 1318 /* 1319 * For a client, this contains the list of supported protocols in wire 1320 * format. 1321 */ 1322 unsigned char *alpn; 1323 size_t alpn_len; 1324 /* 1325 * Next protocol negotiation. For the client, this is the protocol that 1326 * we sent in NextProtocol and is set when handling ServerHello 1327 * extensions. For a server, this is the client's selected_protocol from 1328 * NextProtocol and is set when handling the NextProtocol message, before 1329 * the Finished message. 1330 */ 1331 unsigned char *npn; 1332 size_t npn_len; 1333 1334 /* The available PSK key exchange modes */ 1335 int psk_kex_mode; 1336 1337 /* Set to one if we have negotiated ETM */ 1338 int use_etm; 1339 1340 /* Are we expecting to receive early data? */ 1341 int early_data; 1342 /* Is the session suitable for early data? */ 1343 int early_data_ok; 1344 1345 /* May be sent by a server in HRR. Must be echoed back in ClientHello */ 1346 unsigned char *tls13_cookie; 1347 size_t tls13_cookie_len; 1348 /* Have we received a cookie from the client? */ 1349 int cookieok; 1350 1351 /* 1352 * Maximum Fragment Length as per RFC 4366. 1353 * If this member contains one of the allowed values (1-4) 1354 * then we should include Maximum Fragment Length Negotiation 1355 * extension in Client Hello. 1356 * Please note that value of this member does not have direct 1357 * effect. The actual (binding) value is stored in SSL_SESSION, 1358 * as this extension is optional on server side. 1359 */ 1360 uint8_t max_fragment_len_mode; 1361 1362 /* 1363 * On the client side the number of ticket identities we sent in the 1364 * ClientHello. On the server side the identity of the ticket we 1365 * selected. 1366 */ 1367 int tick_identity; 1368 } ext; 1369 1370 /* 1371 * Parsed form of the ClientHello, kept around across client_hello_cb 1372 * calls. 1373 */ 1374 CLIENTHELLO_MSG *clienthello; 1375 1376 /*- 1377 * no further mod of servername 1378 * 0 : call the servername extension callback. 1379 * 1 : prepare 2, allow last ack just after in server callback. 1380 * 2 : don't call servername callback, no ack in server hello 1381 */ 1382 int servername_done; 1383 # ifndef OPENSSL_NO_CT 1384 /* 1385 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 1386 * If they are not, the connection should be aborted. 1387 */ 1388 ssl_ct_validation_cb ct_validation_callback; 1389 /* User-supplied argument that is passed to the ct_validation_callback */ 1390 void *ct_validation_callback_arg; 1391 /* 1392 * Consolidated stack of SCTs from all sources. 1393 * Lazily populated by CT_get_peer_scts(SSL*) 1394 */ 1395 STACK_OF(SCT) *scts; 1396 /* Have we attempted to find/parse SCTs yet? */ 1397 int scts_parsed; 1398 # endif 1399 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */ 1400 # ifndef OPENSSL_NO_SRTP 1401 /* What we'll do */ 1402 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1403 /* What's been chosen */ 1404 SRTP_PROTECTION_PROFILE *srtp_profile; 1405 # endif 1406 /*- 1407 * 1 if we are renegotiating. 1408 * 2 if we are a server and are inside a handshake 1409 * (i.e. not just sending a HelloRequest) 1410 */ 1411 int renegotiate; 1412 /* If sending a KeyUpdate is pending */ 1413 int key_update; 1414 /* Post-handshake authentication state */ 1415 SSL_PHA_STATE post_handshake_auth; 1416 int pha_enabled; 1417 uint8_t* pha_context; 1418 size_t pha_context_len; 1419 int certreqs_sent; 1420 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */ 1421 1422 # ifndef OPENSSL_NO_SRP 1423 /* ctx for SRP authentication */ 1424 SRP_CTX srp_ctx; 1425 # endif 1426 /* 1427 * Callback for disabling session caching and ticket support on a session 1428 * basis, depending on the chosen cipher. 1429 */ 1430 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1431 RECORD_LAYER rlayer; 1432 /* Default password callback. */ 1433 pem_password_cb *default_passwd_callback; 1434 /* Default password callback user data. */ 1435 void *default_passwd_callback_userdata; 1436 /* Async Job info */ 1437 ASYNC_JOB *job; 1438 ASYNC_WAIT_CTX *waitctx; 1439 size_t asyncrw; 1440 1441 /* 1442 * The maximum number of bytes advertised in session tickets that can be 1443 * sent as early data. 1444 */ 1445 uint32_t max_early_data; 1446 /* 1447 * The maximum number of bytes of early data that a server will tolerate 1448 * (which should be at least as much as max_early_data). 1449 */ 1450 uint32_t recv_max_early_data; 1451 1452 /* 1453 * The number of bytes of early data received so far. If we accepted early 1454 * data then this is a count of the plaintext bytes. If we rejected it then 1455 * this is a count of the ciphertext bytes. 1456 */ 1457 uint32_t early_data_count; 1458 1459 /* TLS1.3 padding callback */ 1460 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1461 void *record_padding_arg; 1462 size_t block_padding; 1463 1464 CRYPTO_RWLOCK *lock; 1465 1466 /* The number of TLS1.3 tickets to automatically send */ 1467 size_t num_tickets; 1468 /* The number of TLS1.3 tickets actually sent so far */ 1469 size_t sent_tickets; 1470 /* The next nonce value to use when we send a ticket on this connection */ 1471 uint64_t next_ticket_nonce; 1472 1473 /* Callback to determine if early_data is acceptable or not */ 1474 SSL_allow_early_data_cb_fn allow_early_data_cb; 1475 void *allow_early_data_cb_data; 1476 1477 /* 1478 * Signature algorithms shared by client and server: cached because these 1479 * are used most often. 1480 */ 1481 const struct sigalg_lookup_st **shared_sigalgs; 1482 size_t shared_sigalgslen; 1483 }; 1484 1485 /* 1486 * Structure containing table entry of values associated with the signature 1487 * algorithms (signature scheme) extension 1488 */ 1489 typedef struct sigalg_lookup_st { 1490 /* TLS 1.3 signature scheme name */ 1491 const char *name; 1492 /* Raw value used in extension */ 1493 uint16_t sigalg; 1494 /* NID of hash algorithm or NID_undef if no hash */ 1495 int hash; 1496 /* Index of hash algorithm or -1 if no hash algorithm */ 1497 int hash_idx; 1498 /* NID of signature algorithm */ 1499 int sig; 1500 /* Index of signature algorithm */ 1501 int sig_idx; 1502 /* Combined hash and signature NID, if any */ 1503 int sigandhash; 1504 /* Required public key curve (ECDSA only) */ 1505 int curve; 1506 } SIGALG_LOOKUP; 1507 1508 typedef struct tls_group_info_st { 1509 int nid; /* Curve NID */ 1510 int secbits; /* Bits of security (from SP800-57) */ 1511 uint16_t flags; /* Flags: currently just group type */ 1512 } TLS_GROUP_INFO; 1513 1514 /* flags values */ 1515 # define TLS_CURVE_TYPE 0x3 /* Mask for group type */ 1516 # define TLS_CURVE_PRIME 0x0 1517 # define TLS_CURVE_CHAR2 0x1 1518 # define TLS_CURVE_CUSTOM 0x2 1519 1520 typedef struct cert_pkey_st CERT_PKEY; 1521 1522 /* 1523 * Structure containing table entry of certificate info corresponding to 1524 * CERT_PKEY entries 1525 */ 1526 typedef struct { 1527 int nid; /* NID of public key algorithm */ 1528 uint32_t amask; /* authmask corresponding to key type */ 1529 } SSL_CERT_LOOKUP; 1530 1531 typedef struct ssl3_state_st { 1532 long flags; 1533 size_t read_mac_secret_size; 1534 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 1535 size_t write_mac_secret_size; 1536 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 1537 unsigned char server_random[SSL3_RANDOM_SIZE]; 1538 unsigned char client_random[SSL3_RANDOM_SIZE]; 1539 /* flags for countermeasure against known-IV weakness */ 1540 int need_empty_fragments; 1541 int empty_fragment_done; 1542 /* used during startup, digest all incoming/outgoing packets */ 1543 BIO *handshake_buffer; 1544 /* 1545 * When handshake digest is determined, buffer is hashed and 1546 * freed and MD_CTX for the required digest is stored here. 1547 */ 1548 EVP_MD_CTX *handshake_dgst; 1549 /* 1550 * Set whenever an expected ChangeCipherSpec message is processed. 1551 * Unset when the peer's Finished message is received. 1552 * Unexpected ChangeCipherSpec messages trigger a fatal alert. 1553 */ 1554 int change_cipher_spec; 1555 int warn_alert; 1556 int fatal_alert; 1557 /* 1558 * we allow one fatal and one warning alert to be outstanding, send close 1559 * alert via the warning alert 1560 */ 1561 int alert_dispatch; 1562 unsigned char send_alert[2]; 1563 /* 1564 * This flag is set when we should renegotiate ASAP, basically when there 1565 * is no more data in the read or write buffers 1566 */ 1567 int renegotiate; 1568 int total_renegotiations; 1569 int num_renegotiations; 1570 int in_read_app_data; 1571 struct { 1572 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 1573 unsigned char finish_md[EVP_MAX_MD_SIZE * 2]; 1574 size_t finish_md_len; 1575 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2]; 1576 size_t peer_finish_md_len; 1577 size_t message_size; 1578 int message_type; 1579 /* used to hold the new cipher we are going to use */ 1580 const SSL_CIPHER *new_cipher; 1581 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) 1582 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */ 1583 # endif 1584 /* used for certificate requests */ 1585 int cert_req; 1586 /* Certificate types in certificate request message. */ 1587 uint8_t *ctype; 1588 size_t ctype_len; 1589 /* Certificate authorities list peer sent */ 1590 STACK_OF(X509_NAME) *peer_ca_names; 1591 size_t key_block_length; 1592 unsigned char *key_block; 1593 const EVP_CIPHER *new_sym_enc; 1594 const EVP_MD *new_hash; 1595 int new_mac_pkey_type; 1596 size_t new_mac_secret_size; 1597 # ifndef OPENSSL_NO_COMP 1598 const SSL_COMP *new_compression; 1599 # else 1600 char *new_compression; 1601 # endif 1602 int cert_request; 1603 /* Raw values of the cipher list from a client */ 1604 unsigned char *ciphers_raw; 1605 size_t ciphers_rawlen; 1606 /* Temporary storage for premaster secret */ 1607 unsigned char *pms; 1608 size_t pmslen; 1609 # ifndef OPENSSL_NO_PSK 1610 /* Temporary storage for PSK key */ 1611 unsigned char *psk; 1612 size_t psklen; 1613 # endif 1614 /* Signature algorithm we actually use */ 1615 const SIGALG_LOOKUP *sigalg; 1616 /* Pointer to certificate we use */ 1617 CERT_PKEY *cert; 1618 /* 1619 * signature algorithms peer reports: e.g. supported signature 1620 * algorithms extension for server or as part of a certificate 1621 * request for client. 1622 * Keep track of the algorithms for TLS and X.509 usage separately. 1623 */ 1624 uint16_t *peer_sigalgs; 1625 uint16_t *peer_cert_sigalgs; 1626 /* Size of above arrays */ 1627 size_t peer_sigalgslen; 1628 size_t peer_cert_sigalgslen; 1629 /* Sigalg peer actually uses */ 1630 const SIGALG_LOOKUP *peer_sigalg; 1631 /* 1632 * Set if corresponding CERT_PKEY can be used with current 1633 * SSL session: e.g. appropriate curve, signature algorithms etc. 1634 * If zero it can't be used at all. 1635 */ 1636 uint32_t valid_flags[SSL_PKEY_NUM]; 1637 /* 1638 * For servers the following masks are for the key and auth algorithms 1639 * that are supported by the certs below. For clients they are masks of 1640 * *disabled* algorithms based on the current session. 1641 */ 1642 uint32_t mask_k; 1643 uint32_t mask_a; 1644 /* 1645 * The following are used by the client to see if a cipher is allowed or 1646 * not. It contains the minimum and maximum version the client's using 1647 * based on what it knows so far. 1648 */ 1649 int min_ver; 1650 int max_ver; 1651 } tmp; 1652 1653 /* Connection binding to prevent renegotiation attacks */ 1654 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 1655 size_t previous_client_finished_len; 1656 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 1657 size_t previous_server_finished_len; 1658 int send_connection_binding; /* TODOEKR */ 1659 1660 # ifndef OPENSSL_NO_NEXTPROTONEG 1661 /* 1662 * Set if we saw the Next Protocol Negotiation extension from our peer. 1663 */ 1664 int npn_seen; 1665 # endif 1666 1667 /* 1668 * ALPN information (we are in the process of transitioning from NPN to 1669 * ALPN.) 1670 */ 1671 1672 /* 1673 * In a server these point to the selected ALPN protocol after the 1674 * ClientHello has been processed. In a client these contain the protocol 1675 * that the server selected once the ServerHello has been processed. 1676 */ 1677 unsigned char *alpn_selected; 1678 size_t alpn_selected_len; 1679 /* used by the server to know what options were proposed */ 1680 unsigned char *alpn_proposed; 1681 size_t alpn_proposed_len; 1682 /* used by the client to know if it actually sent alpn */ 1683 int alpn_sent; 1684 1685 # ifndef OPENSSL_NO_EC 1686 /* 1687 * This is set to true if we believe that this is a version of Safari 1688 * running on OS X 10.6 or newer. We wish to know this because Safari on 1689 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. 1690 */ 1691 char is_probably_safari; 1692 # endif /* !OPENSSL_NO_EC */ 1693 1694 /* For clients: peer temporary key */ 1695 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) 1696 /* The group_id for the DH/ECDH key */ 1697 uint16_t group_id; 1698 EVP_PKEY *peer_tmp; 1699 # endif 1700 1701 } SSL3_STATE; 1702 1703 /* DTLS structures */ 1704 1705 # ifndef OPENSSL_NO_SCTP 1706 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" 1707 # endif 1708 1709 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */ 1710 # define DTLS1_MAX_MTU_OVERHEAD 48 1711 1712 /* 1713 * Flag used in message reuse to indicate the buffer contains the record 1714 * header as well as the handshake message header. 1715 */ 1716 # define DTLS1_SKIP_RECORD_HEADER 2 1717 1718 struct dtls1_retransmit_state { 1719 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1720 EVP_MD_CTX *write_hash; /* used for mac generation */ 1721 COMP_CTX *compress; /* compression */ 1722 SSL_SESSION *session; 1723 unsigned short epoch; 1724 }; 1725 1726 struct hm_header_st { 1727 unsigned char type; 1728 size_t msg_len; 1729 unsigned short seq; 1730 size_t frag_off; 1731 size_t frag_len; 1732 unsigned int is_ccs; 1733 struct dtls1_retransmit_state saved_retransmit_state; 1734 }; 1735 1736 struct dtls1_timeout_st { 1737 /* Number of read timeouts so far */ 1738 unsigned int read_timeouts; 1739 /* Number of write timeouts so far */ 1740 unsigned int write_timeouts; 1741 /* Number of alerts received so far */ 1742 unsigned int num_alerts; 1743 }; 1744 1745 typedef struct hm_fragment_st { 1746 struct hm_header_st msg_header; 1747 unsigned char *fragment; 1748 unsigned char *reassembly; 1749 } hm_fragment; 1750 1751 typedef struct pqueue_st pqueue; 1752 typedef struct pitem_st pitem; 1753 1754 struct pitem_st { 1755 unsigned char priority[8]; /* 64-bit value in big-endian encoding */ 1756 void *data; 1757 pitem *next; 1758 }; 1759 1760 typedef struct pitem_st *piterator; 1761 1762 pitem *pitem_new(unsigned char *prio64be, void *data); 1763 void pitem_free(pitem *item); 1764 pqueue *pqueue_new(void); 1765 void pqueue_free(pqueue *pq); 1766 pitem *pqueue_insert(pqueue *pq, pitem *item); 1767 pitem *pqueue_peek(pqueue *pq); 1768 pitem *pqueue_pop(pqueue *pq); 1769 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be); 1770 pitem *pqueue_iterator(pqueue *pq); 1771 pitem *pqueue_next(piterator *iter); 1772 size_t pqueue_size(pqueue *pq); 1773 1774 typedef struct dtls1_state_st { 1775 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 1776 size_t cookie_len; 1777 unsigned int cookie_verified; 1778 /* handshake message numbers */ 1779 unsigned short handshake_write_seq; 1780 unsigned short next_handshake_write_seq; 1781 unsigned short handshake_read_seq; 1782 /* Buffered handshake messages */ 1783 pqueue *buffered_messages; 1784 /* Buffered (sent) handshake records */ 1785 pqueue *sent_messages; 1786 size_t link_mtu; /* max on-the-wire DTLS packet size */ 1787 size_t mtu; /* max DTLS packet size */ 1788 struct hm_header_st w_msg_hdr; 1789 struct hm_header_st r_msg_hdr; 1790 struct dtls1_timeout_st timeout; 1791 /* 1792 * Indicates when the last handshake msg sent will timeout 1793 */ 1794 struct timeval next_timeout; 1795 /* Timeout duration */ 1796 unsigned int timeout_duration_us; 1797 1798 unsigned int retransmitting; 1799 # ifndef OPENSSL_NO_SCTP 1800 int shutdown_received; 1801 # endif 1802 1803 DTLS_timer_cb timer_cb; 1804 1805 } DTLS1_STATE; 1806 1807 # ifndef OPENSSL_NO_EC 1808 /* 1809 * From ECC-TLS draft, used in encoding the curve type in ECParameters 1810 */ 1811 # define EXPLICIT_PRIME_CURVE_TYPE 1 1812 # define EXPLICIT_CHAR2_CURVE_TYPE 2 1813 # define NAMED_CURVE_TYPE 3 1814 # endif /* OPENSSL_NO_EC */ 1815 1816 struct cert_pkey_st { 1817 X509 *x509; 1818 EVP_PKEY *privatekey; 1819 /* Chain for this certificate */ 1820 STACK_OF(X509) *chain; 1821 /*- 1822 * serverinfo data for this certificate. The data is in TLS Extension 1823 * wire format, specifically it's a series of records like: 1824 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension) 1825 * uint16_t length; 1826 * uint8_t data[length]; 1827 */ 1828 unsigned char *serverinfo; 1829 size_t serverinfo_length; 1830 }; 1831 /* Retrieve Suite B flags */ 1832 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS) 1833 /* Uses to check strict mode: suite B modes are always strict */ 1834 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \ 1835 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT) 1836 1837 typedef enum { 1838 ENDPOINT_CLIENT = 0, 1839 ENDPOINT_SERVER, 1840 ENDPOINT_BOTH 1841 } ENDPOINT; 1842 1843 1844 typedef struct { 1845 unsigned short ext_type; 1846 ENDPOINT role; 1847 /* The context which this extension applies to */ 1848 unsigned int context; 1849 /* 1850 * Per-connection flags relating to this extension type: not used if 1851 * part of an SSL_CTX structure. 1852 */ 1853 uint32_t ext_flags; 1854 SSL_custom_ext_add_cb_ex add_cb; 1855 SSL_custom_ext_free_cb_ex free_cb; 1856 void *add_arg; 1857 SSL_custom_ext_parse_cb_ex parse_cb; 1858 void *parse_arg; 1859 } custom_ext_method; 1860 1861 /* ext_flags values */ 1862 1863 /* 1864 * Indicates an extension has been received. Used to check for unsolicited or 1865 * duplicate extensions. 1866 */ 1867 # define SSL_EXT_FLAG_RECEIVED 0x1 1868 /* 1869 * Indicates an extension has been sent: used to enable sending of 1870 * corresponding ServerHello extension. 1871 */ 1872 # define SSL_EXT_FLAG_SENT 0x2 1873 1874 typedef struct { 1875 custom_ext_method *meths; 1876 size_t meths_count; 1877 } custom_ext_methods; 1878 1879 typedef struct cert_st { 1880 /* Current active set */ 1881 /* 1882 * ALWAYS points to an element of the pkeys array 1883 * Probably it would make more sense to store 1884 * an index, not a pointer. 1885 */ 1886 CERT_PKEY *key; 1887 # ifndef OPENSSL_NO_DH 1888 EVP_PKEY *dh_tmp; 1889 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); 1890 int dh_tmp_auto; 1891 # endif 1892 /* Flags related to certificates */ 1893 uint32_t cert_flags; 1894 CERT_PKEY pkeys[SSL_PKEY_NUM]; 1895 /* Custom certificate types sent in certificate request message. */ 1896 uint8_t *ctype; 1897 size_t ctype_len; 1898 /* 1899 * supported signature algorithms. When set on a client this is sent in 1900 * the client hello as the supported signature algorithms extension. For 1901 * servers it represents the signature algorithms we are willing to use. 1902 */ 1903 uint16_t *conf_sigalgs; 1904 /* Size of above array */ 1905 size_t conf_sigalgslen; 1906 /* 1907 * Client authentication signature algorithms, if not set then uses 1908 * conf_sigalgs. On servers these will be the signature algorithms sent 1909 * to the client in a certificate request for TLS 1.2. On a client this 1910 * represents the signature algorithms we are willing to use for client 1911 * authentication. 1912 */ 1913 uint16_t *client_sigalgs; 1914 /* Size of above array */ 1915 size_t client_sigalgslen; 1916 /* 1917 * Certificate setup callback: if set is called whenever a certificate 1918 * may be required (client or server). the callback can then examine any 1919 * appropriate parameters and setup any certificates required. This 1920 * allows advanced applications to select certificates on the fly: for 1921 * example based on supported signature algorithms or curves. 1922 */ 1923 int (*cert_cb) (SSL *ssl, void *arg); 1924 void *cert_cb_arg; 1925 /* 1926 * Optional X509_STORE for chain building or certificate validation If 1927 * NULL the parent SSL_CTX store is used instead. 1928 */ 1929 X509_STORE *chain_store; 1930 X509_STORE *verify_store; 1931 /* Custom extensions */ 1932 custom_ext_methods custext; 1933 /* Security callback */ 1934 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, 1935 void *other, void *ex); 1936 /* Security level */ 1937 int sec_level; 1938 void *sec_ex; 1939 # ifndef OPENSSL_NO_PSK 1940 /* If not NULL psk identity hint to use for servers */ 1941 char *psk_identity_hint; 1942 # endif 1943 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */ 1944 CRYPTO_RWLOCK *lock; 1945 } CERT; 1946 1947 # define FP_ICC (int (*)(const void *,const void *)) 1948 1949 /* 1950 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit 1951 * of a mess of functions, but hell, think of it as an opaque structure :-) 1952 */ 1953 typedef struct ssl3_enc_method { 1954 int (*enc) (SSL *, SSL3_RECORD *, size_t, int); 1955 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int); 1956 int (*setup_key_block) (SSL *); 1957 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *, 1958 size_t, size_t *); 1959 int (*change_cipher_state) (SSL *, int); 1960 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *); 1961 const char *client_finished_label; 1962 size_t client_finished_label_len; 1963 const char *server_finished_label; 1964 size_t server_finished_label_len; 1965 int (*alert_value) (int); 1966 int (*export_keying_material) (SSL *, unsigned char *, size_t, 1967 const char *, size_t, 1968 const unsigned char *, size_t, 1969 int use_context); 1970 /* Various flags indicating protocol version requirements */ 1971 uint32_t enc_flags; 1972 /* Set the handshake header */ 1973 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type); 1974 /* Close construction of the handshake message */ 1975 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype); 1976 /* Write out handshake message */ 1977 int (*do_write) (SSL *s); 1978 } SSL3_ENC_METHOD; 1979 1980 # define ssl_set_handshake_header(s, pkt, htype) \ 1981 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) 1982 # define ssl_close_construct_packet(s, pkt, htype) \ 1983 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) 1984 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s) 1985 1986 /* Values for enc_flags */ 1987 1988 /* Uses explicit IV for CBC mode */ 1989 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1 1990 /* Uses signature algorithms extension */ 1991 # define SSL_ENC_FLAG_SIGALGS 0x2 1992 /* Uses SHA256 default PRF */ 1993 # define SSL_ENC_FLAG_SHA256_PRF 0x4 1994 /* Is DTLS */ 1995 # define SSL_ENC_FLAG_DTLS 0x8 1996 /* 1997 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 1998 * apply to others in future. 1999 */ 2000 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10 2001 2002 # ifndef OPENSSL_NO_COMP 2003 /* Used for holding the relevant compression methods loaded into SSL_CTX */ 2004 typedef struct ssl3_comp_st { 2005 int comp_id; /* The identifier byte for this compression 2006 * type */ 2007 char *name; /* Text name used for the compression type */ 2008 COMP_METHOD *method; /* The method :-) */ 2009 } SSL3_COMP; 2010 # endif 2011 2012 typedef enum downgrade_en { 2013 DOWNGRADE_NONE, 2014 DOWNGRADE_TO_1_2, 2015 DOWNGRADE_TO_1_1 2016 } DOWNGRADE; 2017 2018 /* 2019 * Dummy status type for the status_type extension. Indicates no status type 2020 * set 2021 */ 2022 #define TLSEXT_STATUSTYPE_nothing -1 2023 2024 /* Sigalgs values */ 2025 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403 2026 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503 2027 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603 2028 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303 2029 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203 2030 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804 2031 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805 2032 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806 2033 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809 2034 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a 2035 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b 2036 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401 2037 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501 2038 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601 2039 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301 2040 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201 2041 #define TLSEXT_SIGALG_dsa_sha256 0x0402 2042 #define TLSEXT_SIGALG_dsa_sha384 0x0502 2043 #define TLSEXT_SIGALG_dsa_sha512 0x0602 2044 #define TLSEXT_SIGALG_dsa_sha224 0x0302 2045 #define TLSEXT_SIGALG_dsa_sha1 0x0202 2046 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee 2047 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef 2048 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded 2049 2050 #define TLSEXT_SIGALG_ed25519 0x0807 2051 #define TLSEXT_SIGALG_ed448 0x0808 2052 2053 /* Known PSK key exchange modes */ 2054 #define TLSEXT_KEX_MODE_KE 0x00 2055 #define TLSEXT_KEX_MODE_KE_DHE 0x01 2056 2057 /* 2058 * Internal representations of key exchange modes 2059 */ 2060 #define TLSEXT_KEX_MODE_FLAG_NONE 0 2061 #define TLSEXT_KEX_MODE_FLAG_KE 1 2062 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2 2063 2064 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \ 2065 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) 2066 2067 /* A dummy signature value not valid for TLSv1.2 signature algs */ 2068 #define TLSEXT_signature_rsa_pss 0x0101 2069 2070 /* TLSv1.3 downgrade protection sentinel values */ 2071 extern const unsigned char tls11downgrade[8]; 2072 extern const unsigned char tls12downgrade[8]; 2073 2074 extern SSL3_ENC_METHOD ssl3_undef_enc_method; 2075 2076 __owur const SSL_METHOD *ssl_bad_method(int ver); 2077 __owur const SSL_METHOD *sslv3_method(void); 2078 __owur const SSL_METHOD *sslv3_server_method(void); 2079 __owur const SSL_METHOD *sslv3_client_method(void); 2080 __owur const SSL_METHOD *tlsv1_method(void); 2081 __owur const SSL_METHOD *tlsv1_server_method(void); 2082 __owur const SSL_METHOD *tlsv1_client_method(void); 2083 __owur const SSL_METHOD *tlsv1_1_method(void); 2084 __owur const SSL_METHOD *tlsv1_1_server_method(void); 2085 __owur const SSL_METHOD *tlsv1_1_client_method(void); 2086 __owur const SSL_METHOD *tlsv1_2_method(void); 2087 __owur const SSL_METHOD *tlsv1_2_server_method(void); 2088 __owur const SSL_METHOD *tlsv1_2_client_method(void); 2089 __owur const SSL_METHOD *tlsv1_3_method(void); 2090 __owur const SSL_METHOD *tlsv1_3_server_method(void); 2091 __owur const SSL_METHOD *tlsv1_3_client_method(void); 2092 __owur const SSL_METHOD *dtlsv1_method(void); 2093 __owur const SSL_METHOD *dtlsv1_server_method(void); 2094 __owur const SSL_METHOD *dtlsv1_client_method(void); 2095 __owur const SSL_METHOD *dtls_bad_ver_client_method(void); 2096 __owur const SSL_METHOD *dtlsv1_2_method(void); 2097 __owur const SSL_METHOD *dtlsv1_2_server_method(void); 2098 __owur const SSL_METHOD *dtlsv1_2_client_method(void); 2099 2100 extern const SSL3_ENC_METHOD TLSv1_enc_data; 2101 extern const SSL3_ENC_METHOD TLSv1_1_enc_data; 2102 extern const SSL3_ENC_METHOD TLSv1_2_enc_data; 2103 extern const SSL3_ENC_METHOD TLSv1_3_enc_data; 2104 extern const SSL3_ENC_METHOD SSLv3_enc_data; 2105 extern const SSL3_ENC_METHOD DTLSv1_enc_data; 2106 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data; 2107 2108 /* 2109 * Flags for SSL methods 2110 */ 2111 # define SSL_METHOD_NO_FIPS (1U<<0) 2112 # define SSL_METHOD_NO_SUITEB (1U<<1) 2113 2114 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \ 2115 s_connect, enc_data) \ 2116 const SSL_METHOD *func_name(void) \ 2117 { \ 2118 static const SSL_METHOD func_name##_data= { \ 2119 version, \ 2120 flags, \ 2121 mask, \ 2122 tls1_new, \ 2123 tls1_clear, \ 2124 tls1_free, \ 2125 s_accept, \ 2126 s_connect, \ 2127 ssl3_read, \ 2128 ssl3_peek, \ 2129 ssl3_write, \ 2130 ssl3_shutdown, \ 2131 ssl3_renegotiate, \ 2132 ssl3_renegotiate_check, \ 2133 ssl3_read_bytes, \ 2134 ssl3_write_bytes, \ 2135 ssl3_dispatch_alert, \ 2136 ssl3_ctrl, \ 2137 ssl3_ctx_ctrl, \ 2138 ssl3_get_cipher_by_char, \ 2139 ssl3_put_cipher_by_char, \ 2140 ssl3_pending, \ 2141 ssl3_num_ciphers, \ 2142 ssl3_get_cipher, \ 2143 tls1_default_timeout, \ 2144 &enc_data, \ 2145 ssl_undefined_void_function, \ 2146 ssl3_callback_ctrl, \ 2147 ssl3_ctx_callback_ctrl, \ 2148 }; \ 2149 return &func_name##_data; \ 2150 } 2151 2152 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \ 2153 const SSL_METHOD *func_name(void) \ 2154 { \ 2155 static const SSL_METHOD func_name##_data= { \ 2156 SSL3_VERSION, \ 2157 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \ 2158 SSL_OP_NO_SSLv3, \ 2159 ssl3_new, \ 2160 ssl3_clear, \ 2161 ssl3_free, \ 2162 s_accept, \ 2163 s_connect, \ 2164 ssl3_read, \ 2165 ssl3_peek, \ 2166 ssl3_write, \ 2167 ssl3_shutdown, \ 2168 ssl3_renegotiate, \ 2169 ssl3_renegotiate_check, \ 2170 ssl3_read_bytes, \ 2171 ssl3_write_bytes, \ 2172 ssl3_dispatch_alert, \ 2173 ssl3_ctrl, \ 2174 ssl3_ctx_ctrl, \ 2175 ssl3_get_cipher_by_char, \ 2176 ssl3_put_cipher_by_char, \ 2177 ssl3_pending, \ 2178 ssl3_num_ciphers, \ 2179 ssl3_get_cipher, \ 2180 ssl3_default_timeout, \ 2181 &SSLv3_enc_data, \ 2182 ssl_undefined_void_function, \ 2183 ssl3_callback_ctrl, \ 2184 ssl3_ctx_callback_ctrl, \ 2185 }; \ 2186 return &func_name##_data; \ 2187 } 2188 2189 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \ 2190 s_connect, enc_data) \ 2191 const SSL_METHOD *func_name(void) \ 2192 { \ 2193 static const SSL_METHOD func_name##_data= { \ 2194 version, \ 2195 flags, \ 2196 mask, \ 2197 dtls1_new, \ 2198 dtls1_clear, \ 2199 dtls1_free, \ 2200 s_accept, \ 2201 s_connect, \ 2202 ssl3_read, \ 2203 ssl3_peek, \ 2204 ssl3_write, \ 2205 dtls1_shutdown, \ 2206 ssl3_renegotiate, \ 2207 ssl3_renegotiate_check, \ 2208 dtls1_read_bytes, \ 2209 dtls1_write_app_data_bytes, \ 2210 dtls1_dispatch_alert, \ 2211 dtls1_ctrl, \ 2212 ssl3_ctx_ctrl, \ 2213 ssl3_get_cipher_by_char, \ 2214 ssl3_put_cipher_by_char, \ 2215 ssl3_pending, \ 2216 ssl3_num_ciphers, \ 2217 ssl3_get_cipher, \ 2218 dtls1_default_timeout, \ 2219 &enc_data, \ 2220 ssl_undefined_void_function, \ 2221 ssl3_callback_ctrl, \ 2222 ssl3_ctx_callback_ctrl, \ 2223 }; \ 2224 return &func_name##_data; \ 2225 } 2226 2227 struct openssl_ssl_test_functions { 2228 int (*p_ssl_init_wbio_buffer) (SSL *s); 2229 int (*p_ssl3_setup_buffers) (SSL *s); 2230 }; 2231 2232 const char *ssl_protocol_to_string(int version); 2233 2234 /* Returns true if certificate and private key for 'idx' are present */ 2235 static ossl_inline int ssl_has_cert(const SSL *s, int idx) 2236 { 2237 if (idx < 0 || idx >= SSL_PKEY_NUM) 2238 return 0; 2239 return s->cert->pkeys[idx].x509 != NULL 2240 && s->cert->pkeys[idx].privatekey != NULL; 2241 } 2242 2243 static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups, 2244 size_t *pgroupslen) 2245 { 2246 *pgroups = s->ext.peer_supportedgroups; 2247 *pgroupslen = s->ext.peer_supportedgroups_len; 2248 } 2249 2250 # ifndef OPENSSL_UNIT_TEST 2251 2252 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes); 2253 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written); 2254 void ssl_clear_cipher_ctx(SSL *s); 2255 int ssl_clear_bad_session(SSL *s); 2256 __owur CERT *ssl_cert_new(void); 2257 __owur CERT *ssl_cert_dup(CERT *cert); 2258 void ssl_cert_clear_certs(CERT *c); 2259 void ssl_cert_free(CERT *c); 2260 __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss); 2261 __owur int ssl_get_new_session(SSL *s, int session); 2262 __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, 2263 size_t sess_id_len); 2264 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello); 2265 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket); 2266 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 2267 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2268 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 2269 const SSL_CIPHER *const *bp); 2270 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 2271 STACK_OF(SSL_CIPHER) *tls13_ciphersuites, 2272 STACK_OF(SSL_CIPHER) **cipher_list, 2273 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 2274 const char *rule_str, 2275 CERT *c); 2276 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format); 2277 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, 2278 STACK_OF(SSL_CIPHER) **skp, 2279 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, 2280 int fatal); 2281 void ssl_update_cache(SSL *s, int mode); 2282 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 2283 const EVP_MD **md, int *mac_pkey_type, 2284 size_t *mac_secret_size, SSL_COMP **comp, 2285 int use_etm); 2286 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, 2287 size_t *int_overhead, size_t *blocksize, 2288 size_t *ext_overhead); 2289 __owur int ssl_cert_is_disabled(size_t idx); 2290 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, 2291 const unsigned char *ptr, 2292 int all); 2293 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2294 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2295 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2296 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2297 __owur int ssl_cert_select_current(CERT *c, X509 *x); 2298 __owur int ssl_cert_set_current(CERT *c, long arg); 2299 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg); 2300 2301 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 2302 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags); 2303 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, 2304 int ref); 2305 2306 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other); 2307 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, 2308 void *other); 2309 2310 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx); 2311 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, 2312 size_t *pidx); 2313 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx); 2314 2315 int ssl_undefined_function(SSL *s); 2316 __owur int ssl_undefined_void_function(void); 2317 __owur int ssl_undefined_const_function(const SSL *s); 2318 __owur int ssl_get_server_cert_serverinfo(SSL *s, 2319 const unsigned char **serverinfo, 2320 size_t *serverinfo_length); 2321 void ssl_set_masks(SSL *s); 2322 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 2323 __owur int ssl_x509err2alert(int type); 2324 void ssl_sort_cipher_list(void); 2325 int ssl_load_ciphers(void); 2326 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, 2327 size_t len, DOWNGRADE dgrd); 2328 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen, 2329 int free_pms); 2330 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm); 2331 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, 2332 int genmaster); 2333 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); 2334 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl); 2335 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl); 2336 2337 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id); 2338 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname); 2339 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 2340 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt, 2341 size_t *len); 2342 int ssl3_init_finished_mac(SSL *s); 2343 __owur int ssl3_setup_key_block(SSL *s); 2344 __owur int ssl3_change_cipher_state(SSL *s, int which); 2345 void ssl3_cleanup_key_block(SSL *s); 2346 __owur int ssl3_do_write(SSL *s, int type); 2347 int ssl3_send_alert(SSL *s, int level, int desc); 2348 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out, 2349 unsigned char *p, size_t len, 2350 size_t *secret_size); 2351 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt); 2352 __owur int ssl3_num_ciphers(void); 2353 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 2354 int ssl3_renegotiate(SSL *ssl); 2355 int ssl3_renegotiate_check(SSL *ssl, int initok); 2356 __owur int ssl3_dispatch_alert(SSL *s); 2357 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen, 2358 unsigned char *p); 2359 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len); 2360 void ssl3_free_digest_list(SSL *s); 2361 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, 2362 CERT_PKEY *cpk); 2363 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, 2364 STACK_OF(SSL_CIPHER) *clnt, 2365 STACK_OF(SSL_CIPHER) *srvr); 2366 __owur int ssl3_digest_cached_records(SSL *s, int keep); 2367 __owur int ssl3_new(SSL *s); 2368 void ssl3_free(SSL *s); 2369 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes); 2370 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes); 2371 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written); 2372 __owur int ssl3_shutdown(SSL *s); 2373 int ssl3_clear(SSL *s); 2374 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 2375 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 2376 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void)); 2377 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void)); 2378 2379 __owur int ssl3_do_change_cipher_spec(SSL *ssl); 2380 __owur long ssl3_default_timeout(void); 2381 2382 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2383 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2384 __owur int tls_setup_handshake(SSL *s); 2385 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2386 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2387 __owur int ssl3_handshake_write(SSL *s); 2388 2389 __owur int ssl_allow_compression(SSL *s); 2390 2391 __owur int ssl_version_supported(const SSL *s, int version, 2392 const SSL_METHOD **meth); 2393 2394 __owur int ssl_set_client_hello_version(SSL *s); 2395 __owur int ssl_check_version_downgrade(SSL *s); 2396 __owur int ssl_set_version_bound(int method_version, int version, int *bound); 2397 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello, 2398 DOWNGRADE *dgrd); 2399 __owur int ssl_choose_client_version(SSL *s, int version, 2400 RAW_EXTENSION *extensions); 2401 __owur int ssl_get_min_max_version(const SSL *s, int *min_version, 2402 int *max_version, int *real_max); 2403 2404 __owur long tls1_default_timeout(void); 2405 __owur int dtls1_do_write(SSL *s, int type); 2406 void dtls1_set_message_header(SSL *s, 2407 unsigned char mt, 2408 size_t len, 2409 size_t frag_off, size_t frag_len); 2410 2411 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len, 2412 size_t *written); 2413 2414 __owur int dtls1_read_failed(SSL *s, int code); 2415 __owur int dtls1_buffer_message(SSL *s, int ccs); 2416 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found); 2417 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 2418 int dtls1_retransmit_buffered_messages(SSL *s); 2419 void dtls1_clear_received_buffer(SSL *s); 2420 void dtls1_clear_sent_buffer(SSL *s); 2421 void dtls1_get_message_header(unsigned char *data, 2422 struct hm_header_st *msg_hdr); 2423 __owur long dtls1_default_timeout(void); 2424 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft); 2425 __owur int dtls1_check_timeout_num(SSL *s); 2426 __owur int dtls1_handle_timeout(SSL *s); 2427 void dtls1_start_timer(SSL *s); 2428 void dtls1_stop_timer(SSL *s); 2429 __owur int dtls1_is_timer_expired(SSL *s); 2430 void dtls1_double_timeout(SSL *s); 2431 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, 2432 size_t cookie_len); 2433 __owur size_t dtls1_min_mtu(SSL *s); 2434 void dtls1_hm_fragment_free(hm_fragment *frag); 2435 __owur int dtls1_query_mtu(SSL *s); 2436 2437 __owur int tls1_new(SSL *s); 2438 void tls1_free(SSL *s); 2439 int tls1_clear(SSL *s); 2440 2441 __owur int dtls1_new(SSL *s); 2442 void dtls1_free(SSL *s); 2443 int dtls1_clear(SSL *s); 2444 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 2445 __owur int dtls1_shutdown(SSL *s); 2446 2447 __owur int dtls1_dispatch_alert(SSL *s); 2448 2449 __owur int ssl_init_wbio_buffer(SSL *s); 2450 int ssl_free_wbio_buffer(SSL *s); 2451 2452 __owur int tls1_change_cipher_state(SSL *s, int which); 2453 __owur int tls1_setup_key_block(SSL *s); 2454 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, 2455 unsigned char *p); 2456 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out, 2457 unsigned char *p, size_t len, 2458 size_t *secret_size); 2459 __owur int tls13_setup_key_block(SSL *s); 2460 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen, 2461 unsigned char *p); 2462 __owur int tls13_change_cipher_state(SSL *s, int which); 2463 __owur int tls13_update_key(SSL *s, int send); 2464 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md, 2465 const unsigned char *secret, 2466 const unsigned char *label, size_t labellen, 2467 const unsigned char *data, size_t datalen, 2468 unsigned char *out, size_t outlen, int fatal); 2469 __owur int tls13_derive_key(SSL *s, const EVP_MD *md, 2470 const unsigned char *secret, unsigned char *key, 2471 size_t keylen); 2472 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md, 2473 const unsigned char *secret, unsigned char *iv, 2474 size_t ivlen); 2475 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md, 2476 const unsigned char *secret, 2477 unsigned char *fin, size_t finlen); 2478 int tls13_generate_secret(SSL *s, const EVP_MD *md, 2479 const unsigned char *prevsecret, 2480 const unsigned char *insecret, 2481 size_t insecretlen, 2482 unsigned char *outsecret); 2483 __owur int tls13_generate_handshake_secret(SSL *s, 2484 const unsigned char *insecret, 2485 size_t insecretlen); 2486 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out, 2487 unsigned char *prev, size_t prevlen, 2488 size_t *secret_size); 2489 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2490 const char *label, size_t llen, 2491 const unsigned char *p, size_t plen, 2492 int use_context); 2493 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2494 const char *label, size_t llen, 2495 const unsigned char *context, 2496 size_t contextlen, int use_context); 2497 __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out, 2498 size_t olen, const char *label, 2499 size_t llen, 2500 const unsigned char *context, 2501 size_t contextlen); 2502 __owur int tls1_alert_code(int code); 2503 __owur int tls13_alert_code(int code); 2504 __owur int ssl3_alert_code(int code); 2505 2506 # ifndef OPENSSL_NO_EC 2507 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 2508 # endif 2509 2510 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); 2511 2512 # ifndef OPENSSL_NO_EC 2513 2514 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id); 2515 __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves); 2516 __owur uint16_t tls1_shared_group(SSL *s, int nmatch); 2517 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen, 2518 int *curves, size_t ncurves); 2519 __owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen, 2520 const char *str); 2521 void tls1_get_formatlist(SSL *s, const unsigned char **pformats, 2522 size_t *num_formats); 2523 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id); 2524 __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id); 2525 __owur EVP_PKEY *ssl_generate_param_group(uint16_t id); 2526 # endif /* OPENSSL_NO_EC */ 2527 2528 __owur int tls_curve_allowed(SSL *s, uint16_t curve, int op); 2529 void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, 2530 size_t *pgroupslen); 2531 2532 __owur int tls1_set_server_sigalgs(SSL *s); 2533 2534 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello, 2535 SSL_SESSION **ret); 2536 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick, 2537 size_t eticklen, 2538 const unsigned char *sess_id, 2539 size_t sesslen, SSL_SESSION **psess); 2540 2541 __owur int tls_use_ticket(SSL *s); 2542 2543 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op); 2544 2545 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client); 2546 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen, 2547 int client); 2548 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, 2549 int client); 2550 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain, 2551 int idx); 2552 void tls1_set_cert_validity(SSL *s); 2553 2554 # ifndef OPENSSL_NO_CT 2555 __owur int ssl_validate_ct(SSL *s); 2556 # endif 2557 2558 # ifndef OPENSSL_NO_DH 2559 __owur DH *ssl_get_auto_dh(SSL *s); 2560 # endif 2561 2562 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee); 2563 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, 2564 int vfy); 2565 2566 int tls_choose_sigalg(SSL *s, int fatalerrs); 2567 2568 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); 2569 void ssl_clear_hash_ctx(EVP_MD_CTX **hash); 2570 __owur long ssl_get_algorithm2(SSL *s); 2571 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt, 2572 const uint16_t *psig, size_t psiglen); 2573 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen); 2574 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert); 2575 __owur int tls1_process_sigalgs(SSL *s); 2576 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey); 2577 __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd); 2578 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs); 2579 # ifndef OPENSSL_NO_EC 2580 __owur int tls_check_sigalg_curve(const SSL *s, int curve); 2581 # endif 2582 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey); 2583 __owur int ssl_set_client_disabled(SSL *s); 2584 __owur int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int echde); 2585 2586 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, 2587 size_t *hashlen); 2588 __owur const EVP_MD *ssl_md(int idx); 2589 __owur const EVP_MD *ssl_handshake_md(SSL *s); 2590 __owur const EVP_MD *ssl_prf_md(SSL *s); 2591 2592 /* 2593 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated 2594 * with |ssl|, if logging is enabled. It returns one on success and zero on 2595 * failure. The entry is identified by the first 8 bytes of 2596 * |encrypted_premaster|. 2597 */ 2598 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl, 2599 const uint8_t *encrypted_premaster, 2600 size_t encrypted_premaster_len, 2601 const uint8_t *premaster, 2602 size_t premaster_len); 2603 2604 /* 2605 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if 2606 * logging is available. It returns one on success and zero on failure. It tags 2607 * the entry with |label|. 2608 */ 2609 __owur int ssl_log_secret(SSL *ssl, const char *label, 2610 const uint8_t *secret, size_t secret_len); 2611 2612 #define MASTER_SECRET_LABEL "CLIENT_RANDOM" 2613 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET" 2614 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET" 2615 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET" 2616 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0" 2617 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" 2618 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET" 2619 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET" 2620 2621 /* s3_cbc.c */ 2622 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 2623 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, 2624 unsigned char *md_out, 2625 size_t *md_out_size, 2626 const unsigned char header[13], 2627 const unsigned char *data, 2628 size_t data_plus_mac_size, 2629 size_t data_plus_mac_plus_padding_size, 2630 const unsigned char *mac_secret, 2631 size_t mac_secret_length, char is_sslv3); 2632 2633 __owur int srp_generate_server_master_secret(SSL *s); 2634 __owur int srp_generate_client_master_secret(SSL *s); 2635 __owur int srp_verify_server_param(SSL *s); 2636 2637 /* statem/statem_srvr.c */ 2638 2639 __owur int send_certificate_request(SSL *s); 2640 2641 /* statem/extensions_cust.c */ 2642 2643 custom_ext_method *custom_ext_find(const custom_ext_methods *exts, 2644 ENDPOINT role, unsigned int ext_type, 2645 size_t *idx); 2646 2647 void custom_ext_init(custom_ext_methods *meths); 2648 2649 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type, 2650 const unsigned char *ext_data, size_t ext_size, 2651 X509 *x, size_t chainidx); 2652 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x, 2653 size_t chainidx, int maxversion); 2654 2655 __owur int custom_exts_copy(custom_ext_methods *dst, 2656 const custom_ext_methods *src); 2657 __owur int custom_exts_copy_flags(custom_ext_methods *dst, 2658 const custom_ext_methods *src); 2659 void custom_exts_free(custom_ext_methods *exts); 2660 2661 void ssl_comp_free_compression_methods_int(void); 2662 2663 /* ssl_mcnf.c */ 2664 void ssl_ctx_system_config(SSL_CTX *ctx); 2665 2666 # else /* OPENSSL_UNIT_TEST */ 2667 2668 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer 2669 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers 2670 2671 # endif 2672 #endif 2673
Indexes created Sun Mar 01 05:31:48 UTC 2026