1 /* 2 * Copyright 1995-2021 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 Apache License 2.0 (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/dsa.h> 25 # include <openssl/err.h> 26 # include <openssl/ssl.h> 27 # include <openssl/async.h> 28 # include <openssl/symhacks.h> 29 # include <openssl/ct.h> 30 # include "record/record.h" 31 # include "statem/statem.h" 32 # include "internal/packet.h" 33 # include "internal/dane.h" 34 # include "internal/refcount.h" 35 # include "internal/tsan_assist.h" 36 # include "internal/bio.h" 37 # include "internal/ktls.h" 38 39 # ifdef OPENSSL_BUILD_SHLIBSSL 40 # undef OPENSSL_EXTERN 41 # define OPENSSL_EXTERN OPENSSL_EXPORT 42 # endif 43 44 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ 45 l|=(((unsigned long)(*((c)++)))<< 8), \ 46 l|=(((unsigned long)(*((c)++)))<<16), \ 47 l|=(((unsigned long)(*((c)++)))<<24)) 48 49 /* NOTE - c is not incremented as per c2l */ 50 # define c2ln(c,l1,l2,n) { \ 51 c+=n; \ 52 l1=l2=0; \ 53 switch (n) { \ 54 case 8: l2 =((unsigned long)(*(--(c))))<<24; \ 55 case 7: l2|=((unsigned long)(*(--(c))))<<16; \ 56 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ 57 case 5: l2|=((unsigned long)(*(--(c)))); \ 58 case 4: l1 =((unsigned long)(*(--(c))))<<24; \ 59 case 3: l1|=((unsigned long)(*(--(c))))<<16; \ 60 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ 61 case 1: l1|=((unsigned long)(*(--(c)))); \ 62 } \ 63 } 64 65 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 66 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 67 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 68 *((c)++)=(unsigned char)(((l)>>24)&0xff)) 69 70 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ 71 l|=((unsigned long)(*((c)++)))<<16, \ 72 l|=((unsigned long)(*((c)++)))<< 8, \ 73 l|=((unsigned long)(*((c)++)))) 74 75 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \ 76 l|=((uint64_t)(*((c)++)))<<48, \ 77 l|=((uint64_t)(*((c)++)))<<40, \ 78 l|=((uint64_t)(*((c)++)))<<32, \ 79 l|=((uint64_t)(*((c)++)))<<24, \ 80 l|=((uint64_t)(*((c)++)))<<16, \ 81 l|=((uint64_t)(*((c)++)))<< 8, \ 82 l|=((uint64_t)(*((c)++)))) 83 84 85 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 86 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 87 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 88 *((c)++)=(unsigned char)(((l) )&0xff)) 89 90 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \ 91 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 92 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 93 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 94 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 95 *((c)++)=(unsigned char)(((l) )&0xff)) 96 97 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ 98 *((c)++)=(unsigned char)(((l)>>48)&0xff), \ 99 *((c)++)=(unsigned char)(((l)>>40)&0xff), \ 100 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 101 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 102 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 103 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 104 *((c)++)=(unsigned char)(((l) )&0xff)) 105 106 /* NOTE - c is not incremented as per l2c */ 107 # define l2cn(l1,l2,c,n) { \ 108 c+=n; \ 109 switch (n) { \ 110 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 111 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 112 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 113 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 114 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 115 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 116 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 117 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 118 } \ 119 } 120 121 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \ 122 (((unsigned int)((c)[1])) )),(c)+=2) 123 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \ 124 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2) 125 126 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \ 127 (((unsigned long)((c)[1]))<< 8)| \ 128 (((unsigned long)((c)[2])) )),(c)+=3) 129 130 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \ 131 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \ 132 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3) 133 134 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION 135 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION 136 137 /* 138 * DTLS version numbers are strange because they're inverted. Except for 139 * DTLS1_BAD_VER, which should be considered "lower" than the rest. 140 */ 141 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1)) 142 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2)) 143 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2)) 144 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2)) 145 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2)) 146 147 148 /* 149 * Define the Bitmasks for SSL_CIPHER.algorithms. 150 * This bits are used packed as dense as possible. If new methods/ciphers 151 * etc will be added, the bits a likely to change, so this information 152 * is for internal library use only, even though SSL_CIPHER.algorithms 153 * can be publicly accessed. 154 * Use the according functions for cipher management instead. 155 * 156 * The bit mask handling in the selection and sorting scheme in 157 * ssl_create_cipher_list() has only limited capabilities, reflecting 158 * that the different entities within are mutually exclusive: 159 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 160 */ 161 162 /* Bits for algorithm_mkey (key exchange algorithm) */ 163 /* RSA key exchange */ 164 # define SSL_kRSA 0x00000001U 165 /* tmp DH key no DH cert */ 166 # define SSL_kDHE 0x00000002U 167 /* synonym */ 168 # define SSL_kEDH SSL_kDHE 169 /* ephemeral ECDH */ 170 # define SSL_kECDHE 0x00000004U 171 /* synonym */ 172 # define SSL_kEECDH SSL_kECDHE 173 /* PSK */ 174 # define SSL_kPSK 0x00000008U 175 /* GOST key exchange */ 176 # define SSL_kGOST 0x00000010U 177 /* SRP */ 178 # define SSL_kSRP 0x00000020U 179 180 # define SSL_kRSAPSK 0x00000040U 181 # define SSL_kECDHEPSK 0x00000080U 182 # define SSL_kDHEPSK 0x00000100U 183 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */ 184 # define SSL_kGOST18 0x00000200U 185 186 /* all PSK */ 187 188 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK) 189 190 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */ 191 # define SSL_kANY 0x00000000U 192 193 /* Bits for algorithm_auth (server authentication) */ 194 /* RSA auth */ 195 # define SSL_aRSA 0x00000001U 196 /* DSS auth */ 197 # define SSL_aDSS 0x00000002U 198 /* no auth (i.e. use ADH or AECDH) */ 199 # define SSL_aNULL 0x00000004U 200 /* ECDSA auth*/ 201 # define SSL_aECDSA 0x00000008U 202 /* PSK auth */ 203 # define SSL_aPSK 0x00000010U 204 /* GOST R 34.10-2001 signature auth */ 205 # define SSL_aGOST01 0x00000020U 206 /* SRP auth */ 207 # define SSL_aSRP 0x00000040U 208 /* GOST R 34.10-2012 signature auth */ 209 # define SSL_aGOST12 0x00000080U 210 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */ 211 # define SSL_aANY 0x00000000U 212 /* All bits requiring a certificate */ 213 #define SSL_aCERT \ 214 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12) 215 216 /* Bits for algorithm_enc (symmetric encryption) */ 217 # define SSL_DES 0x00000001U 218 # define SSL_3DES 0x00000002U 219 # define SSL_RC4 0x00000004U 220 # define SSL_RC2 0x00000008U 221 # define SSL_IDEA 0x00000010U 222 # define SSL_eNULL 0x00000020U 223 # define SSL_AES128 0x00000040U 224 # define SSL_AES256 0x00000080U 225 # define SSL_CAMELLIA128 0x00000100U 226 # define SSL_CAMELLIA256 0x00000200U 227 # define SSL_eGOST2814789CNT 0x00000400U 228 # define SSL_SEED 0x00000800U 229 # define SSL_AES128GCM 0x00001000U 230 # define SSL_AES256GCM 0x00002000U 231 # define SSL_AES128CCM 0x00004000U 232 # define SSL_AES256CCM 0x00008000U 233 # define SSL_AES128CCM8 0x00010000U 234 # define SSL_AES256CCM8 0x00020000U 235 # define SSL_eGOST2814789CNT12 0x00040000U 236 # define SSL_CHACHA20POLY1305 0x00080000U 237 # define SSL_ARIA128GCM 0x00100000U 238 # define SSL_ARIA256GCM 0x00200000U 239 # define SSL_MAGMA 0x00400000U 240 # define SSL_KUZNYECHIK 0x00800000U 241 242 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM) 243 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8) 244 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM) 245 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 246 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305) 247 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM) 248 # define SSL_ARIA (SSL_ARIAGCM) 249 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \ 250 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \ 251 | SSL_CAMELLIA256 | SSL_SEED) 252 253 /* Bits for algorithm_mac (symmetric authentication) */ 254 255 # define SSL_MD5 0x00000001U 256 # define SSL_SHA1 0x00000002U 257 # define SSL_GOST94 0x00000004U 258 # define SSL_GOST89MAC 0x00000008U 259 # define SSL_SHA256 0x00000010U 260 # define SSL_SHA384 0x00000020U 261 /* Not a real MAC, just an indication it is part of cipher */ 262 # define SSL_AEAD 0x00000040U 263 # define SSL_GOST12_256 0x00000080U 264 # define SSL_GOST89MAC12 0x00000100U 265 # define SSL_GOST12_512 0x00000200U 266 # define SSL_MAGMAOMAC 0x00000400U 267 # define SSL_KUZNYECHIKOMAC 0x00000800U 268 269 /* 270 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make 271 * sure to update this constant too 272 */ 273 274 # define SSL_MD_MD5_IDX 0 275 # define SSL_MD_SHA1_IDX 1 276 # define SSL_MD_GOST94_IDX 2 277 # define SSL_MD_GOST89MAC_IDX 3 278 # define SSL_MD_SHA256_IDX 4 279 # define SSL_MD_SHA384_IDX 5 280 # define SSL_MD_GOST12_256_IDX 6 281 # define SSL_MD_GOST89MAC12_IDX 7 282 # define SSL_MD_GOST12_512_IDX 8 283 # define SSL_MD_MD5_SHA1_IDX 9 284 # define SSL_MD_SHA224_IDX 10 285 # define SSL_MD_SHA512_IDX 11 286 # define SSL_MD_MAGMAOMAC_IDX 12 287 # define SSL_MD_KUZNYECHIKOMAC_IDX 13 288 # define SSL_MAX_DIGEST 14 289 290 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST 291 292 /* Bits for algorithm2 (handshake digests and other extra flags) */ 293 294 /* Bits 0-7 are handshake MAC */ 295 # define SSL_HANDSHAKE_MAC_MASK 0xFF 296 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX 297 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX 298 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX 299 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX 300 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX 301 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX 302 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1 303 304 /* Bits 8-15 bits are PRF */ 305 # define TLS1_PRF_DGST_SHIFT 8 306 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 307 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT) 308 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT) 309 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT) 310 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT) 311 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT) 312 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT) 313 314 /* 315 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also 316 * goes into algorithm2) 317 */ 318 # define TLS1_STREAM_MAC 0x10000 319 /* 320 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites 321 * (currently this also goes into algorithm2) 322 */ 323 # define TLS1_TLSTREE 0x20000 324 325 # define SSL_STRONG_MASK 0x0000001FU 326 # define SSL_DEFAULT_MASK 0X00000020U 327 328 # define SSL_STRONG_NONE 0x00000001U 329 # define SSL_LOW 0x00000002U 330 # define SSL_MEDIUM 0x00000004U 331 # define SSL_HIGH 0x00000008U 332 # define SSL_FIPS 0x00000010U 333 # define SSL_NOT_DEFAULT 0x00000020U 334 335 /* we have used 0000003f - 26 bits left to go */ 336 337 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */ 338 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000 339 340 /* Check if an SSL structure is using DTLS */ 341 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) 342 343 /* Check if we are using TLSv1.3 */ 344 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \ 345 && (s)->method->version >= TLS1_3_VERSION \ 346 && (s)->method->version != TLS_ANY_VERSION) 347 348 # define SSL_TREAT_AS_TLS13(s) \ 349 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \ 350 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \ 351 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \ 352 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \ 353 || (s)->hello_retry_request == SSL_HRR_PENDING) 354 355 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3.tmp.finish_md_len == 0 \ 356 || (s)->s3.tmp.peer_finish_md_len == 0) 357 358 /* See if we need explicit IV */ 359 # define SSL_USE_EXPLICIT_IV(s) \ 360 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 361 /* 362 * See if we use signature algorithms extension and signature algorithm 363 * before signatures. 364 */ 365 # define SSL_USE_SIGALGS(s) \ 366 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 367 /* 368 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 369 * apply to others in future. 370 */ 371 # define SSL_USE_TLS1_2_CIPHERS(s) \ 372 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 373 /* 374 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method 375 * flags because it may not be set to correct version yet. 376 */ 377 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ 378 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \ 379 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION))) 380 /* 381 * Determine if a client should send signature algorithms extension: 382 * as with TLS1.2 cipher we can't rely on method flags. 383 */ 384 # define SSL_CLIENT_USE_SIGALGS(s) \ 385 SSL_CLIENT_USE_TLS1_2_CIPHERS(s) 386 387 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \ 388 (((value) >= TLSEXT_max_fragment_length_512) && \ 389 ((value) <= TLSEXT_max_fragment_length_4096)) 390 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \ 391 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode) 392 # define GET_MAX_FRAGMENT_LENGTH(session) \ 393 (512U << (session->ext.max_fragment_len_mode - 1)) 394 395 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ) 396 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE) 397 398 /* Mostly for SSLv3 */ 399 # define SSL_PKEY_RSA 0 400 # define SSL_PKEY_RSA_PSS_SIGN 1 401 # define SSL_PKEY_DSA_SIGN 2 402 # define SSL_PKEY_ECC 3 403 # define SSL_PKEY_GOST01 4 404 # define SSL_PKEY_GOST12_256 5 405 # define SSL_PKEY_GOST12_512 6 406 # define SSL_PKEY_ED25519 7 407 # define SSL_PKEY_ED448 8 408 # define SSL_PKEY_NUM 9 409 410 # define SSL_ENC_DES_IDX 0 411 # define SSL_ENC_3DES_IDX 1 412 # define SSL_ENC_RC4_IDX 2 413 # define SSL_ENC_RC2_IDX 3 414 # define SSL_ENC_IDEA_IDX 4 415 # define SSL_ENC_NULL_IDX 5 416 # define SSL_ENC_AES128_IDX 6 417 # define SSL_ENC_AES256_IDX 7 418 # define SSL_ENC_CAMELLIA128_IDX 8 419 # define SSL_ENC_CAMELLIA256_IDX 9 420 # define SSL_ENC_GOST89_IDX 10 421 # define SSL_ENC_SEED_IDX 11 422 # define SSL_ENC_AES128GCM_IDX 12 423 # define SSL_ENC_AES256GCM_IDX 13 424 # define SSL_ENC_AES128CCM_IDX 14 425 # define SSL_ENC_AES256CCM_IDX 15 426 # define SSL_ENC_AES128CCM8_IDX 16 427 # define SSL_ENC_AES256CCM8_IDX 17 428 # define SSL_ENC_GOST8912_IDX 18 429 # define SSL_ENC_CHACHA_IDX 19 430 # define SSL_ENC_ARIA128GCM_IDX 20 431 # define SSL_ENC_ARIA256GCM_IDX 21 432 # define SSL_ENC_MAGMA_IDX 22 433 # define SSL_ENC_KUZNYECHIK_IDX 23 434 # define SSL_ENC_NUM_IDX 24 435 436 /*- 437 * SSL_kRSA <- RSA_ENC 438 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 439 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 440 * SSL_aRSA <- RSA_ENC | RSA_SIGN 441 * SSL_aDSS <- DSA_SIGN 442 */ 443 444 /*- 445 #define CERT_INVALID 0 446 #define CERT_PUBLIC_KEY 1 447 #define CERT_PRIVATE_KEY 2 448 */ 449 450 /* Post-Handshake Authentication state */ 451 typedef enum { 452 SSL_PHA_NONE = 0, 453 SSL_PHA_EXT_SENT, /* client-side only: extension sent */ 454 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */ 455 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */ 456 SSL_PHA_REQUESTED /* request received by client, or sent by server */ 457 } SSL_PHA_STATE; 458 459 /* CipherSuite length. SSLv3 and all TLS versions. */ 460 # define TLS_CIPHER_LEN 2 461 /* used to hold info on the particular ciphers used */ 462 struct ssl_cipher_st { 463 uint32_t valid; 464 const char *name; /* text name */ 465 const char *stdname; /* RFC name */ 466 uint32_t id; /* id, 4 bytes, first is version */ 467 /* 468 * changed in 1.0.0: these four used to be portions of a single value 469 * 'algorithms' 470 */ 471 uint32_t algorithm_mkey; /* key exchange algorithm */ 472 uint32_t algorithm_auth; /* server authentication */ 473 uint32_t algorithm_enc; /* symmetric encryption */ 474 uint32_t algorithm_mac; /* symmetric authentication */ 475 int min_tls; /* minimum SSL/TLS protocol version */ 476 int max_tls; /* maximum SSL/TLS protocol version */ 477 int min_dtls; /* minimum DTLS protocol version */ 478 int max_dtls; /* maximum DTLS protocol version */ 479 uint32_t algo_strength; /* strength and export flags */ 480 uint32_t algorithm2; /* Extra flags */ 481 int32_t strength_bits; /* Number of bits really used */ 482 uint32_t alg_bits; /* Number of bits for algorithm */ 483 }; 484 485 /* Used to hold SSL/TLS functions */ 486 struct ssl_method_st { 487 int version; 488 unsigned flags; 489 unsigned long mask; 490 int (*ssl_new) (SSL *s); 491 int (*ssl_clear) (SSL *s); 492 void (*ssl_free) (SSL *s); 493 int (*ssl_accept) (SSL *s); 494 int (*ssl_connect) (SSL *s); 495 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes); 496 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes); 497 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written); 498 int (*ssl_shutdown) (SSL *s); 499 int (*ssl_renegotiate) (SSL *s); 500 int (*ssl_renegotiate_check) (SSL *s, int); 501 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type, 502 unsigned char *buf, size_t len, int peek, 503 size_t *readbytes); 504 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len, 505 size_t *written); 506 int (*ssl_dispatch_alert) (SSL *s); 507 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg); 508 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg); 509 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr); 510 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt, 511 size_t *len); 512 size_t (*ssl_pending) (const SSL *s); 513 int (*num_ciphers) (void); 514 const SSL_CIPHER *(*get_cipher) (unsigned ncipher); 515 long (*get_timeout) (void); 516 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */ 517 int (*ssl_version) (void); 518 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void)); 519 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void)); 520 }; 521 522 /* 523 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for 524 * consistency, even in the event of OPENSSL_NO_PSK being defined. 525 */ 526 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512 527 528 /*- 529 * Lets make this into an ASN.1 type structure as follows 530 * SSL_SESSION_ID ::= SEQUENCE { 531 * version INTEGER, -- structure version number 532 * SSLversion INTEGER, -- SSL version number 533 * Cipher OCTET STRING, -- the 3 byte cipher ID 534 * Session_ID OCTET STRING, -- the Session ID 535 * Master_key OCTET STRING, -- the master key 536 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument 537 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time 538 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds 539 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate 540 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context 541 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer' 542 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension 543 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint 544 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity 545 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket 546 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only) 547 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method 548 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username 549 * flags [ 13 ] EXPLICIT INTEGER -- optional flags 550 * } 551 * Look in ssl/ssl_asn1.c for more details 552 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-). 553 */ 554 struct ssl_session_st { 555 int ssl_version; /* what ssl version session info is being kept 556 * in here? */ 557 size_t master_key_length; 558 559 /* TLSv1.3 early_secret used for external PSKs */ 560 unsigned char early_secret[EVP_MAX_MD_SIZE]; 561 /* 562 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption 563 * PSK 564 */ 565 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH]; 566 /* session_id - valid? */ 567 size_t session_id_length; 568 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 569 /* 570 * this is used to determine whether the session is being reused in the 571 * appropriate context. It is up to the application to set this, via 572 * SSL_new 573 */ 574 size_t sid_ctx_length; 575 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 576 # ifndef OPENSSL_NO_PSK 577 char *psk_identity_hint; 578 char *psk_identity; 579 # endif 580 /* 581 * Used to indicate that session resumption is not allowed. Applications 582 * can also set this bit for a new session via not_resumable_session_cb 583 * to disable session caching and tickets. 584 */ 585 int not_resumable; 586 /* This is the cert and type for the other end. */ 587 X509 *peer; 588 /* Certificate chain peer sent. */ 589 STACK_OF(X509) *peer_chain; 590 /* 591 * when app_verify_callback accepts a session where the peer's 592 * certificate is not ok, we must remember the error for session reuse: 593 */ 594 long verify_result; /* only for servers */ 595 CRYPTO_REF_COUNT references; 596 time_t timeout; 597 time_t time; 598 time_t calc_timeout; 599 int timeout_ovf; 600 unsigned int compress_meth; /* Need to lookup the method */ 601 const SSL_CIPHER *cipher; 602 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to 603 * load the 'cipher' structure */ 604 unsigned int kex_group; /* TLS group from key exchange */ 605 CRYPTO_EX_DATA ex_data; /* application specific data */ 606 /* 607 * These are used to make removal of session-ids more efficient and to 608 * implement a maximum cache size. 609 */ 610 struct ssl_session_st *prev, *next; 611 612 struct { 613 char *hostname; 614 /* RFC4507 info */ 615 unsigned char *tick; /* Session ticket */ 616 size_t ticklen; /* Session ticket length */ 617 /* Session lifetime hint in seconds */ 618 unsigned long tick_lifetime_hint; 619 uint32_t tick_age_add; 620 /* Max number of bytes that can be sent as early data */ 621 uint32_t max_early_data; 622 /* The ALPN protocol selected for this session */ 623 unsigned char *alpn_selected; 624 size_t alpn_selected_len; 625 /* 626 * Maximum Fragment Length as per RFC 4366. 627 * If this value does not contain RFC 4366 allowed values (1-4) then 628 * either the Maximum Fragment Length Negotiation failed or was not 629 * performed at all. 630 */ 631 uint8_t max_fragment_len_mode; 632 } ext; 633 # ifndef OPENSSL_NO_SRP 634 char *srp_username; 635 # endif 636 unsigned char *ticket_appdata; 637 size_t ticket_appdata_len; 638 uint32_t flags; 639 SSL_CTX *owner; 640 CRYPTO_RWLOCK *lock; 641 }; 642 643 /* Extended master secret support */ 644 # define SSL_SESS_FLAG_EXTMS 0x1 645 646 # ifndef OPENSSL_NO_SRP 647 648 typedef struct srp_ctx_st { 649 /* param for all the callbacks */ 650 void *SRP_cb_arg; 651 /* set client Hello login callback */ 652 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *); 653 /* set SRP N/g param callback for verification */ 654 int (*SRP_verify_param_callback) (SSL *, void *); 655 /* set SRP client passwd callback */ 656 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *); 657 char *login; 658 BIGNUM *N, *g, *s, *B, *A; 659 BIGNUM *a, *b, *v; 660 char *info; 661 int strength; 662 unsigned long srp_Mask; 663 } SRP_CTX; 664 665 # endif 666 667 typedef enum { 668 SSL_EARLY_DATA_NONE = 0, 669 SSL_EARLY_DATA_CONNECT_RETRY, 670 SSL_EARLY_DATA_CONNECTING, 671 SSL_EARLY_DATA_WRITE_RETRY, 672 SSL_EARLY_DATA_WRITING, 673 SSL_EARLY_DATA_WRITE_FLUSH, 674 SSL_EARLY_DATA_UNAUTH_WRITING, 675 SSL_EARLY_DATA_FINISHED_WRITING, 676 SSL_EARLY_DATA_ACCEPT_RETRY, 677 SSL_EARLY_DATA_ACCEPTING, 678 SSL_EARLY_DATA_READ_RETRY, 679 SSL_EARLY_DATA_READING, 680 SSL_EARLY_DATA_FINISHED_READING 681 } SSL_EARLY_DATA_STATE; 682 683 /* 684 * We check that the amount of unreadable early data doesn't exceed 685 * max_early_data. max_early_data is given in plaintext bytes. However if it is 686 * unreadable then we only know the number of ciphertext bytes. We also don't 687 * know how much the overhead should be because it depends on the ciphersuite. 688 * We make a small allowance. We assume 5 records of actual data plus the end 689 * of early data alert record. Each record has a tag and a content type byte. 690 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the 691 * content of the alert record either which is 2 bytes. 692 */ 693 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2) 694 695 /* 696 * The allowance we have between the client's calculated ticket age and our own. 697 * We allow for 10 seconds (units are in ms). If a ticket is presented and the 698 * client's age calculation is different by more than this than our own then we 699 * do not allow that ticket for early_data. 700 */ 701 # define TICKET_AGE_ALLOWANCE (10 * 1000) 702 703 #define MAX_COMPRESSIONS_SIZE 255 704 705 struct ssl_comp_st { 706 int id; 707 const char *name; 708 COMP_METHOD *method; 709 }; 710 711 typedef struct raw_extension_st { 712 /* Raw packet data for the extension */ 713 PACKET data; 714 /* Set to 1 if the extension is present or 0 otherwise */ 715 int present; 716 /* Set to 1 if we have already parsed the extension or 0 otherwise */ 717 int parsed; 718 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */ 719 unsigned int type; 720 /* Track what order extensions are received in (0-based). */ 721 size_t received_order; 722 } RAW_EXTENSION; 723 724 typedef struct { 725 unsigned int isv2; 726 unsigned int legacy_version; 727 unsigned char random[SSL3_RANDOM_SIZE]; 728 size_t session_id_len; 729 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 730 size_t dtls_cookie_len; 731 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH]; 732 PACKET ciphersuites; 733 size_t compressions_len; 734 unsigned char compressions[MAX_COMPRESSIONS_SIZE]; 735 PACKET extensions; 736 size_t pre_proc_exts_len; 737 RAW_EXTENSION *pre_proc_exts; 738 } CLIENTHELLO_MSG; 739 740 /* 741 * Extension index values NOTE: Any updates to these defines should be mirrored 742 * with equivalent updates to ext_defs in extensions.c 743 */ 744 typedef enum tlsext_index_en { 745 TLSEXT_IDX_renegotiate, 746 TLSEXT_IDX_server_name, 747 TLSEXT_IDX_max_fragment_length, 748 TLSEXT_IDX_srp, 749 TLSEXT_IDX_ec_point_formats, 750 TLSEXT_IDX_supported_groups, 751 TLSEXT_IDX_session_ticket, 752 TLSEXT_IDX_status_request, 753 TLSEXT_IDX_next_proto_neg, 754 TLSEXT_IDX_application_layer_protocol_negotiation, 755 TLSEXT_IDX_use_srtp, 756 TLSEXT_IDX_encrypt_then_mac, 757 TLSEXT_IDX_signed_certificate_timestamp, 758 TLSEXT_IDX_extended_master_secret, 759 TLSEXT_IDX_signature_algorithms_cert, 760 TLSEXT_IDX_post_handshake_auth, 761 TLSEXT_IDX_signature_algorithms, 762 TLSEXT_IDX_supported_versions, 763 TLSEXT_IDX_psk_kex_modes, 764 TLSEXT_IDX_key_share, 765 TLSEXT_IDX_cookie, 766 TLSEXT_IDX_cryptopro_bug, 767 TLSEXT_IDX_early_data, 768 TLSEXT_IDX_certificate_authorities, 769 TLSEXT_IDX_padding, 770 TLSEXT_IDX_psk, 771 /* Dummy index - must always be the last entry */ 772 TLSEXT_IDX_num_builtins 773 } TLSEXT_INDEX; 774 775 DEFINE_LHASH_OF(SSL_SESSION); 776 /* Needed in ssl_cert.c */ 777 DEFINE_LHASH_OF(X509_NAME); 778 779 # define TLSEXT_KEYNAME_LENGTH 16 780 # define TLSEXT_TICK_KEY_LENGTH 32 781 782 typedef struct ssl_ctx_ext_secure_st { 783 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; 784 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; 785 } SSL_CTX_EXT_SECURE; 786 787 /* 788 * Helper function for HMAC 789 * The structure should be considered opaque, it will change once the low 790 * level deprecated calls are removed. At that point it can be replaced 791 * by EVP_MAC_CTX and most of the functions converted to macros or inlined 792 * directly. 793 */ 794 typedef struct ssl_hmac_st { 795 EVP_MAC_CTX *ctx; 796 # ifndef OPENSSL_NO_DEPRECATED_3_0 797 HMAC_CTX *old_ctx; 798 # endif 799 } SSL_HMAC; 800 801 SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx); 802 void ssl_hmac_free(SSL_HMAC *ctx); 803 # ifndef OPENSSL_NO_DEPRECATED_3_0 804 HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx); 805 # endif 806 EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx); 807 int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md); 808 int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len); 809 int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len, 810 size_t max_size); 811 size_t ssl_hmac_size(const SSL_HMAC *ctx); 812 813 int ssl_get_EC_curve_nid(const EVP_PKEY *pkey); 814 815 typedef struct tls_group_info_st { 816 char *tlsname; /* Curve Name as in TLS specs */ 817 char *realname; /* Curve Name according to provider */ 818 char *algorithm; /* Algorithm name to fetch */ 819 unsigned int secbits; /* Bits of security (from SP800-57) */ 820 uint16_t group_id; /* Group ID */ 821 int mintls; /* Minimum TLS version, -1 unsupported */ 822 int maxtls; /* Maximum TLS version (or 0 for undefined) */ 823 int mindtls; /* Minimum DTLS version, -1 unsupported */ 824 int maxdtls; /* Maximum DTLS version (or 0 for undefined) */ 825 char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */ 826 } TLS_GROUP_INFO; 827 828 /* flags values */ 829 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */ 830 # define TLS_GROUP_CURVE_PRIME 0x00000001U 831 # define TLS_GROUP_CURVE_CHAR2 0x00000002U 832 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U 833 # define TLS_GROUP_FFDHE 0x00000008U 834 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U 835 836 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3) 837 838 struct ssl_ctx_st { 839 OSSL_LIB_CTX *libctx; 840 841 const SSL_METHOD *method; 842 STACK_OF(SSL_CIPHER) *cipher_list; 843 /* same as above but sorted for lookup */ 844 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 845 /* TLSv1.3 specific ciphersuites */ 846 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 847 struct x509_store_st /* X509_STORE */ *cert_store; 848 LHASH_OF(SSL_SESSION) *sessions; 849 /* 850 * Most session-ids that will be cached, default is 851 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. 852 */ 853 size_t session_cache_size; 854 struct ssl_session_st *session_cache_head; 855 struct ssl_session_st *session_cache_tail; 856 /* 857 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT, 858 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which 859 * means only SSL_accept will cache SSL_SESSIONS. 860 */ 861 uint32_t session_cache_mode; 862 /* 863 * If timeout is not 0, it is the default timeout value set when 864 * SSL_new() is called. This has been put in to make life easier to set 865 * things up 866 */ 867 long session_timeout; 868 /* 869 * If this callback is not null, it will be called each time a session id 870 * is added to the cache. If this function returns 1, it means that the 871 * callback will do a SSL_SESSION_free() when it has finished using it. 872 * Otherwise, on 0, it means the callback has finished with it. If 873 * remove_session_cb is not null, it will be called when a session-id is 874 * removed from the cache. After the call, OpenSSL will 875 * SSL_SESSION_free() it. 876 */ 877 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess); 878 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess); 879 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl, 880 const unsigned char *data, int len, 881 int *copy); 882 struct { 883 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */ 884 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */ 885 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */ 886 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */ 887 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */ 888 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */ 889 TSAN_QUALIFIER int sess_miss; /* session lookup misses */ 890 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */ 891 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */ 892 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */ 893 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in 894 * the cache was passed back via 895 * the callback. This indicates 896 * that the application is 897 * supplying session-id's from 898 * other processes - spooky 899 * :-) */ 900 } stats; 901 902 CRYPTO_REF_COUNT references; 903 904 /* if defined, these override the X509_verify_cert() calls */ 905 int (*app_verify_callback) (X509_STORE_CTX *, void *); 906 void *app_verify_arg; 907 /* 908 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored 909 * ('app_verify_callback' was called with just one argument) 910 */ 911 912 /* Default password callback. */ 913 pem_password_cb *default_passwd_callback; 914 915 /* Default password callback user data. */ 916 void *default_passwd_callback_userdata; 917 918 /* get client cert callback */ 919 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey); 920 921 /* cookie generate callback */ 922 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie, 923 unsigned int *cookie_len); 924 925 /* verify cookie callback */ 926 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie, 927 unsigned int cookie_len); 928 929 /* TLS1.3 app-controlled cookie generate callback */ 930 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie, 931 size_t *cookie_len); 932 933 /* TLS1.3 verify app-controlled cookie callback */ 934 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie, 935 size_t cookie_len); 936 937 CRYPTO_EX_DATA ex_data; 938 939 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */ 940 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */ 941 942 STACK_OF(X509) *extra_certs; 943 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */ 944 945 /* Default values used when no per-SSL value is defined follow */ 946 947 /* used if SSL's info_callback is NULL */ 948 void (*info_callback) (const SSL *ssl, int type, int val); 949 950 /* 951 * What we put in certificate_authorities extension for TLS 1.3 952 * (ClientHello and CertificateRequest) or just client cert requests for 953 * earlier versions. If client_ca_names is populated then it is only used 954 * for client cert requests, and in preference to ca_names. 955 */ 956 STACK_OF(X509_NAME) *ca_names; 957 STACK_OF(X509_NAME) *client_ca_names; 958 959 /* 960 * Default values to use in SSL structures follow (these are copied by 961 * SSL_new) 962 */ 963 964 uint64_t options; 965 uint32_t mode; 966 int min_proto_version; 967 int max_proto_version; 968 size_t max_cert_list; 969 970 struct cert_st /* CERT */ *cert; 971 int read_ahead; 972 973 /* callback that allows applications to peek at protocol messages */ 974 void (*msg_callback) (int write_p, int version, int content_type, 975 const void *buf, size_t len, SSL *ssl, void *arg); 976 void *msg_callback_arg; 977 978 uint32_t verify_mode; 979 size_t sid_ctx_length; 980 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 981 /* called 'verify_callback' in the SSL */ 982 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx); 983 984 /* Default generate session ID callback. */ 985 GEN_SESSION_CB generate_session_id; 986 987 X509_VERIFY_PARAM *param; 988 989 int quiet_shutdown; 990 991 # ifndef OPENSSL_NO_CT 992 CTLOG_STORE *ctlog_store; /* CT Log Store */ 993 /* 994 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 995 * If they are not, the connection should be aborted. 996 */ 997 ssl_ct_validation_cb ct_validation_callback; 998 void *ct_validation_callback_arg; 999 # endif 1000 1001 /* 1002 * If we're using more than one pipeline how should we divide the data 1003 * up between the pipes? 1004 */ 1005 size_t split_send_fragment; 1006 /* 1007 * Maximum amount of data to send in one fragment. actual record size can 1008 * be more than this due to padding and MAC overheads. 1009 */ 1010 size_t max_send_fragment; 1011 1012 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 1013 size_t max_pipelines; 1014 1015 /* The default read buffer length to use (0 means not set) */ 1016 size_t default_read_buf_len; 1017 1018 # ifndef OPENSSL_NO_ENGINE 1019 /* 1020 * Engine to pass requests for client certs to 1021 */ 1022 ENGINE *client_cert_engine; 1023 # endif 1024 1025 /* ClientHello callback. Mostly for extensions, but not entirely. */ 1026 SSL_client_hello_cb_fn client_hello_cb; 1027 void *client_hello_cb_arg; 1028 1029 /* TLS extensions. */ 1030 struct { 1031 /* TLS extensions servername callback */ 1032 int (*servername_cb) (SSL *, int *, void *); 1033 void *servername_arg; 1034 /* RFC 4507 session ticket keys */ 1035 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; 1036 SSL_CTX_EXT_SECURE *secure; 1037 # ifndef OPENSSL_NO_DEPRECATED_3_0 1038 /* Callback to support customisation of ticket key setting */ 1039 int (*ticket_key_cb) (SSL *ssl, 1040 unsigned char *name, unsigned char *iv, 1041 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc); 1042 #endif 1043 int (*ticket_key_evp_cb) (SSL *ssl, 1044 unsigned char *name, unsigned char *iv, 1045 EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx, 1046 int enc); 1047 1048 /* certificate status request info */ 1049 /* Callback for status request */ 1050 int (*status_cb) (SSL *ssl, void *arg); 1051 void *status_arg; 1052 /* ext status type used for CSR extension (OCSP Stapling) */ 1053 int status_type; 1054 /* RFC 4366 Maximum Fragment Length Negotiation */ 1055 uint8_t max_fragment_len_mode; 1056 1057 /* EC extension values inherited by SSL structure */ 1058 size_t ecpointformats_len; 1059 unsigned char *ecpointformats; 1060 1061 size_t supportedgroups_len; 1062 uint16_t *supportedgroups; 1063 1064 uint16_t *supported_groups_default; 1065 size_t supported_groups_default_len; 1066 /* 1067 * ALPN information (we are in the process of transitioning from NPN to 1068 * ALPN.) 1069 */ 1070 1071 /*- 1072 * For a server, this contains a callback function that allows the 1073 * server to select the protocol for the connection. 1074 * out: on successful return, this must point to the raw protocol 1075 * name (without the length prefix). 1076 * outlen: on successful return, this contains the length of |*out|. 1077 * in: points to the client's list of supported protocols in 1078 * wire-format. 1079 * inlen: the length of |in|. 1080 */ 1081 int (*alpn_select_cb) (SSL *s, 1082 const unsigned char **out, 1083 unsigned char *outlen, 1084 const unsigned char *in, 1085 unsigned int inlen, void *arg); 1086 void *alpn_select_cb_arg; 1087 1088 /* 1089 * For a client, this contains the list of supported protocols in wire 1090 * format. 1091 */ 1092 unsigned char *alpn; 1093 size_t alpn_len; 1094 1095 # ifndef OPENSSL_NO_NEXTPROTONEG 1096 /* Next protocol negotiation information */ 1097 1098 /* 1099 * For a server, this contains a callback function by which the set of 1100 * advertised protocols can be provided. 1101 */ 1102 SSL_CTX_npn_advertised_cb_func npn_advertised_cb; 1103 void *npn_advertised_cb_arg; 1104 /* 1105 * For a client, this contains a callback function that selects the next 1106 * protocol from the list provided by the server. 1107 */ 1108 SSL_CTX_npn_select_cb_func npn_select_cb; 1109 void *npn_select_cb_arg; 1110 # endif 1111 1112 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH]; 1113 } ext; 1114 1115 # ifndef OPENSSL_NO_PSK 1116 SSL_psk_client_cb_func psk_client_callback; 1117 SSL_psk_server_cb_func psk_server_callback; 1118 # endif 1119 SSL_psk_find_session_cb_func psk_find_session_cb; 1120 SSL_psk_use_session_cb_func psk_use_session_cb; 1121 1122 # ifndef OPENSSL_NO_SRP 1123 SRP_CTX srp_ctx; /* ctx for SRP authentication */ 1124 # endif 1125 1126 /* Shared DANE context */ 1127 struct dane_ctx_st dane; 1128 1129 # ifndef OPENSSL_NO_SRTP 1130 /* SRTP profiles we are willing to do from RFC 5764 */ 1131 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1132 # endif 1133 /* 1134 * Callback for disabling session caching and ticket support on a session 1135 * basis, depending on the chosen cipher. 1136 */ 1137 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1138 1139 CRYPTO_RWLOCK *lock; 1140 1141 /* 1142 * Callback for logging key material for use with debugging tools like 1143 * Wireshark. The callback should log `line` followed by a newline. 1144 */ 1145 SSL_CTX_keylog_cb_func keylog_callback; 1146 1147 /* 1148 * The maximum number of bytes advertised in session tickets that can be 1149 * sent as early data. 1150 */ 1151 uint32_t max_early_data; 1152 1153 /* 1154 * The maximum number of bytes of early data that a server will tolerate 1155 * (which should be at least as much as max_early_data). 1156 */ 1157 uint32_t recv_max_early_data; 1158 1159 /* TLS1.3 padding callback */ 1160 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1161 void *record_padding_arg; 1162 size_t block_padding; 1163 1164 /* Session ticket appdata */ 1165 SSL_CTX_generate_session_ticket_fn generate_ticket_cb; 1166 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb; 1167 void *ticket_cb_data; 1168 1169 /* The number of TLS1.3 tickets to automatically send */ 1170 size_t num_tickets; 1171 1172 /* Callback to determine if early_data is acceptable or not */ 1173 SSL_allow_early_data_cb_fn allow_early_data_cb; 1174 void *allow_early_data_cb_data; 1175 1176 /* Do we advertise Post-handshake auth support? */ 1177 int pha_enabled; 1178 1179 /* Callback for SSL async handling */ 1180 SSL_async_callback_fn async_cb; 1181 void *async_cb_arg; 1182 1183 char *propq; 1184 1185 int ssl_mac_pkey_id[SSL_MD_NUM_IDX]; 1186 const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]; 1187 const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]; 1188 size_t ssl_mac_secret_size[SSL_MD_NUM_IDX]; 1189 1190 /* Cache of all sigalgs we know and whether they are available or not */ 1191 struct sigalg_lookup_st *sigalg_lookup_cache; 1192 1193 TLS_GROUP_INFO *group_list; 1194 size_t group_list_len; 1195 size_t group_list_max_len; 1196 1197 /* masks of disabled algorithms */ 1198 uint32_t disabled_enc_mask; 1199 uint32_t disabled_mac_mask; 1200 uint32_t disabled_mkey_mask; 1201 uint32_t disabled_auth_mask; 1202 }; 1203 1204 typedef struct cert_pkey_st CERT_PKEY; 1205 1206 struct ssl_st { 1207 /* 1208 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, 1209 * DTLS1_VERSION) 1210 */ 1211 int version; 1212 /* SSLv3 */ 1213 const SSL_METHOD *method; 1214 /* 1215 * There are 2 BIO's even though they are normally both the same. This 1216 * is so data can be read and written to different handlers 1217 */ 1218 /* used by SSL_read */ 1219 BIO *rbio; 1220 /* used by SSL_write */ 1221 BIO *wbio; 1222 /* used during session-id reuse to concatenate messages */ 1223 BIO *bbio; 1224 /* 1225 * This holds a variable that indicates what we were doing when a 0 or -1 1226 * is returned. This is needed for non-blocking IO so we know what 1227 * request needs re-doing when in SSL_accept or SSL_connect 1228 */ 1229 int rwstate; 1230 int (*handshake_func) (SSL *); 1231 /* 1232 * Imagine that here's a boolean member "init" that is switched as soon 1233 * as SSL_set_{accept/connect}_state is called for the first time, so 1234 * that "state" and "handshake_func" are properly initialized. But as 1235 * handshake_func is == 0 until then, we use this test instead of an 1236 * "init" member. 1237 */ 1238 /* are we the server side? */ 1239 int server; 1240 /* 1241 * Generate a new session or reuse an old one. 1242 * NB: For servers, the 'new' session may actually be a previously 1243 * cached session or even the previous session unless 1244 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set 1245 */ 1246 int new_session; 1247 /* don't send shutdown packets */ 1248 int quiet_shutdown; 1249 /* we have shut things down, 0x01 sent, 0x02 for received */ 1250 int shutdown; 1251 /* where we are */ 1252 OSSL_STATEM statem; 1253 SSL_EARLY_DATA_STATE early_data_state; 1254 BUF_MEM *init_buf; /* buffer used during init */ 1255 void *init_msg; /* pointer to handshake message body, set by 1256 * ssl3_get_message() */ 1257 size_t init_num; /* amount read/written */ 1258 size_t init_off; /* amount read/written */ 1259 1260 struct { 1261 long flags; 1262 size_t read_mac_secret_size; 1263 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 1264 size_t write_mac_secret_size; 1265 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 1266 unsigned char server_random[SSL3_RANDOM_SIZE]; 1267 unsigned char client_random[SSL3_RANDOM_SIZE]; 1268 /* flags for countermeasure against known-IV weakness */ 1269 int need_empty_fragments; 1270 int empty_fragment_done; 1271 /* used during startup, digest all incoming/outgoing packets */ 1272 BIO *handshake_buffer; 1273 /* 1274 * When handshake digest is determined, buffer is hashed and 1275 * freed and MD_CTX for the required digest is stored here. 1276 */ 1277 EVP_MD_CTX *handshake_dgst; 1278 /* 1279 * Set whenever an expected ChangeCipherSpec message is processed. 1280 * Unset when the peer's Finished message is received. 1281 * Unexpected ChangeCipherSpec messages trigger a fatal alert. 1282 */ 1283 int change_cipher_spec; 1284 int warn_alert; 1285 int fatal_alert; 1286 /* 1287 * we allow one fatal and one warning alert to be outstanding, send close 1288 * alert via the warning alert 1289 */ 1290 int alert_dispatch; 1291 unsigned char send_alert[2]; 1292 /* 1293 * This flag is set when we should renegotiate ASAP, basically when there 1294 * is no more data in the read or write buffers 1295 */ 1296 int renegotiate; 1297 int total_renegotiations; 1298 int num_renegotiations; 1299 int in_read_app_data; 1300 struct { 1301 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 1302 unsigned char finish_md[EVP_MAX_MD_SIZE * 2]; 1303 size_t finish_md_len; 1304 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2]; 1305 size_t peer_finish_md_len; 1306 size_t message_size; 1307 int message_type; 1308 /* used to hold the new cipher we are going to use */ 1309 const SSL_CIPHER *new_cipher; 1310 EVP_PKEY *pkey; /* holds short lived key exchange key */ 1311 /* used for certificate requests */ 1312 int cert_req; 1313 /* Certificate types in certificate request message. */ 1314 uint8_t *ctype; 1315 size_t ctype_len; 1316 /* Certificate authorities list peer sent */ 1317 STACK_OF(X509_NAME) *peer_ca_names; 1318 size_t key_block_length; 1319 unsigned char *key_block; 1320 const EVP_CIPHER *new_sym_enc; 1321 const EVP_MD *new_hash; 1322 int new_mac_pkey_type; 1323 size_t new_mac_secret_size; 1324 # ifndef OPENSSL_NO_COMP 1325 const SSL_COMP *new_compression; 1326 # else 1327 char *new_compression; 1328 # endif 1329 int cert_request; 1330 /* Raw values of the cipher list from a client */ 1331 unsigned char *ciphers_raw; 1332 size_t ciphers_rawlen; 1333 /* Temporary storage for premaster secret */ 1334 unsigned char *pms; 1335 size_t pmslen; 1336 # ifndef OPENSSL_NO_PSK 1337 /* Temporary storage for PSK key */ 1338 unsigned char *psk; 1339 size_t psklen; 1340 # endif 1341 /* Signature algorithm we actually use */ 1342 const struct sigalg_lookup_st *sigalg; 1343 /* Pointer to certificate we use */ 1344 CERT_PKEY *cert; 1345 /* 1346 * signature algorithms peer reports: e.g. supported signature 1347 * algorithms extension for server or as part of a certificate 1348 * request for client. 1349 * Keep track of the algorithms for TLS and X.509 usage separately. 1350 */ 1351 uint16_t *peer_sigalgs; 1352 uint16_t *peer_cert_sigalgs; 1353 /* Size of above arrays */ 1354 size_t peer_sigalgslen; 1355 size_t peer_cert_sigalgslen; 1356 /* Sigalg peer actually uses */ 1357 const struct sigalg_lookup_st *peer_sigalg; 1358 /* 1359 * Set if corresponding CERT_PKEY can be used with current 1360 * SSL session: e.g. appropriate curve, signature algorithms etc. 1361 * If zero it can't be used at all. 1362 */ 1363 uint32_t valid_flags[SSL_PKEY_NUM]; 1364 /* 1365 * For servers the following masks are for the key and auth algorithms 1366 * that are supported by the certs below. For clients they are masks of 1367 * *disabled* algorithms based on the current session. 1368 */ 1369 uint32_t mask_k; 1370 uint32_t mask_a; 1371 /* 1372 * The following are used by the client to see if a cipher is allowed or 1373 * not. It contains the minimum and maximum version the client's using 1374 * based on what it knows so far. 1375 */ 1376 int min_ver; 1377 int max_ver; 1378 } tmp; 1379 1380 /* Connection binding to prevent renegotiation attacks */ 1381 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 1382 size_t previous_client_finished_len; 1383 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 1384 size_t previous_server_finished_len; 1385 int send_connection_binding; 1386 1387 # ifndef OPENSSL_NO_NEXTPROTONEG 1388 /* 1389 * Set if we saw the Next Protocol Negotiation extension from our peer. 1390 */ 1391 int npn_seen; 1392 # endif 1393 1394 /* 1395 * ALPN information (we are in the process of transitioning from NPN to 1396 * ALPN.) 1397 */ 1398 1399 /* 1400 * In a server these point to the selected ALPN protocol after the 1401 * ClientHello has been processed. In a client these contain the protocol 1402 * that the server selected once the ServerHello has been processed. 1403 */ 1404 unsigned char *alpn_selected; 1405 size_t alpn_selected_len; 1406 /* used by the server to know what options were proposed */ 1407 unsigned char *alpn_proposed; 1408 size_t alpn_proposed_len; 1409 /* used by the client to know if it actually sent alpn */ 1410 int alpn_sent; 1411 1412 /* 1413 * This is set to true if we believe that this is a version of Safari 1414 * running on OS X 10.6 or newer. We wish to know this because Safari on 1415 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. 1416 */ 1417 char is_probably_safari; 1418 1419 /* 1420 * Track whether we did a key exchange this handshake or not, so 1421 * SSL_get_negotiated_group() knows whether to fall back to the 1422 * value in the SSL_SESSION. 1423 */ 1424 char did_kex; 1425 /* For clients: peer temporary key */ 1426 /* The group_id for the key exchange key */ 1427 uint16_t group_id; 1428 EVP_PKEY *peer_tmp; 1429 1430 } s3; 1431 1432 struct dtls1_state_st *d1; /* DTLSv1 variables */ 1433 /* callback that allows applications to peek at protocol messages */ 1434 void (*msg_callback) (int write_p, int version, int content_type, 1435 const void *buf, size_t len, SSL *ssl, void *arg); 1436 void *msg_callback_arg; 1437 int hit; /* reusing a previous session */ 1438 X509_VERIFY_PARAM *param; 1439 /* Per connection DANE state */ 1440 SSL_DANE dane; 1441 /* crypto */ 1442 STACK_OF(SSL_CIPHER) *peer_ciphers; 1443 STACK_OF(SSL_CIPHER) *cipher_list; 1444 STACK_OF(SSL_CIPHER) *cipher_list_by_id; 1445 /* TLSv1.3 specific ciphersuites */ 1446 STACK_OF(SSL_CIPHER) *tls13_ciphersuites; 1447 /* 1448 * These are the ones being used, the ones in SSL_SESSION are the ones to 1449 * be 'copied' into these ones 1450 */ 1451 uint32_t mac_flags; 1452 /* 1453 * The TLS1.3 secrets. 1454 */ 1455 unsigned char early_secret[EVP_MAX_MD_SIZE]; 1456 unsigned char handshake_secret[EVP_MAX_MD_SIZE]; 1457 unsigned char master_secret[EVP_MAX_MD_SIZE]; 1458 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE]; 1459 unsigned char client_finished_secret[EVP_MAX_MD_SIZE]; 1460 unsigned char server_finished_secret[EVP_MAX_MD_SIZE]; 1461 unsigned char server_finished_hash[EVP_MAX_MD_SIZE]; 1462 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE]; 1463 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE]; 1464 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE]; 1465 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE]; 1466 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE]; 1467 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */ 1468 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */ 1469 EVP_MD_CTX *read_hash; /* used for mac generation */ 1470 COMP_CTX *compress; /* compression */ 1471 COMP_CTX *expand; /* uncompress */ 1472 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1473 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */ 1474 EVP_MD_CTX *write_hash; /* used for mac generation */ 1475 /* session info */ 1476 /* client cert? */ 1477 /* This is used to hold the server certificate used */ 1478 struct cert_st /* CERT */ *cert; 1479 1480 /* 1481 * The hash of all messages prior to the CertificateVerify, and the length 1482 * of that hash. 1483 */ 1484 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE]; 1485 size_t cert_verify_hash_len; 1486 1487 /* Flag to indicate whether we should send a HelloRetryRequest or not */ 1488 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE} 1489 hello_retry_request; 1490 1491 /* 1492 * the session_id_context is used to ensure sessions are only reused in 1493 * the appropriate context 1494 */ 1495 size_t sid_ctx_length; 1496 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH]; 1497 /* This can also be in the session once a session is established */ 1498 SSL_SESSION *session; 1499 /* TLSv1.3 PSK session */ 1500 SSL_SESSION *psksession; 1501 unsigned char *psksession_id; 1502 size_t psksession_id_len; 1503 /* Default generate session ID callback. */ 1504 GEN_SESSION_CB generate_session_id; 1505 /* 1506 * The temporary TLSv1.3 session id. This isn't really a session id at all 1507 * but is a random value sent in the legacy session id field. 1508 */ 1509 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH]; 1510 size_t tmp_session_id_len; 1511 /* Used in SSL3 */ 1512 /* 1513 * 0 don't care about verify failure. 1514 * 1 fail if verify fails 1515 */ 1516 uint32_t verify_mode; 1517 /* fail if callback returns 0 */ 1518 int (*verify_callback) (int ok, X509_STORE_CTX *ctx); 1519 /* optional informational callback */ 1520 void (*info_callback) (const SSL *ssl, int type, int val); 1521 /* error bytes to be written */ 1522 int error; 1523 /* actual code */ 1524 int error_code; 1525 # ifndef OPENSSL_NO_PSK 1526 SSL_psk_client_cb_func psk_client_callback; 1527 SSL_psk_server_cb_func psk_server_callback; 1528 # endif 1529 SSL_psk_find_session_cb_func psk_find_session_cb; 1530 SSL_psk_use_session_cb_func psk_use_session_cb; 1531 1532 SSL_CTX *ctx; 1533 /* Verified chain of peer */ 1534 STACK_OF(X509) *verified_chain; 1535 long verify_result; 1536 /* extra application data */ 1537 CRYPTO_EX_DATA ex_data; 1538 /* 1539 * What we put in certificate_authorities extension for TLS 1.3 1540 * (ClientHello and CertificateRequest) or just client cert requests for 1541 * earlier versions. If client_ca_names is populated then it is only used 1542 * for client cert requests, and in preference to ca_names. 1543 */ 1544 STACK_OF(X509_NAME) *ca_names; 1545 STACK_OF(X509_NAME) *client_ca_names; 1546 CRYPTO_REF_COUNT references; 1547 /* protocol behaviour */ 1548 uint64_t options; 1549 /* API behaviour */ 1550 uint32_t mode; 1551 int min_proto_version; 1552 int max_proto_version; 1553 size_t max_cert_list; 1554 int first_packet; 1555 /* 1556 * What was passed in ClientHello.legacy_version. Used for RSA pre-master 1557 * secret and SSLv3/TLS (<=1.2) rollback check 1558 */ 1559 int client_version; 1560 /* 1561 * If we're using more than one pipeline how should we divide the data 1562 * up between the pipes? 1563 */ 1564 size_t split_send_fragment; 1565 /* 1566 * Maximum amount of data to send in one fragment. actual record size can 1567 * be more than this due to padding and MAC overheads. 1568 */ 1569 size_t max_send_fragment; 1570 /* Up to how many pipelines should we use? If 0 then 1 is assumed */ 1571 size_t max_pipelines; 1572 1573 struct { 1574 /* Built-in extension flags */ 1575 uint8_t extflags[TLSEXT_IDX_num_builtins]; 1576 /* TLS extension debug callback */ 1577 void (*debug_cb)(SSL *s, int client_server, int type, 1578 const unsigned char *data, int len, void *arg); 1579 void *debug_arg; 1580 char *hostname; 1581 /* certificate status request info */ 1582 /* Status type or -1 if no status type */ 1583 int status_type; 1584 /* Raw extension data, if seen */ 1585 unsigned char *scts; 1586 /* Length of raw extension data, if seen */ 1587 uint16_t scts_len; 1588 /* Expect OCSP CertificateStatus message */ 1589 int status_expected; 1590 1591 struct { 1592 /* OCSP status request only */ 1593 STACK_OF(OCSP_RESPID) *ids; 1594 X509_EXTENSIONS *exts; 1595 /* OCSP response received or to be sent */ 1596 unsigned char *resp; 1597 size_t resp_len; 1598 } ocsp; 1599 1600 /* RFC4507 session ticket expected to be received or sent */ 1601 int ticket_expected; 1602 /* TLS 1.3 tickets requested by the application. */ 1603 int extra_tickets_expected; 1604 size_t ecpointformats_len; 1605 /* our list */ 1606 unsigned char *ecpointformats; 1607 1608 size_t peer_ecpointformats_len; 1609 /* peer's list */ 1610 unsigned char *peer_ecpointformats; 1611 size_t supportedgroups_len; 1612 /* our list */ 1613 uint16_t *supportedgroups; 1614 1615 size_t peer_supportedgroups_len; 1616 /* peer's list */ 1617 uint16_t *peer_supportedgroups; 1618 1619 /* TLS Session Ticket extension override */ 1620 TLS_SESSION_TICKET_EXT *session_ticket; 1621 /* TLS Session Ticket extension callback */ 1622 tls_session_ticket_ext_cb_fn session_ticket_cb; 1623 void *session_ticket_cb_arg; 1624 /* TLS pre-shared secret session resumption */ 1625 tls_session_secret_cb_fn session_secret_cb; 1626 void *session_secret_cb_arg; 1627 /* 1628 * For a client, this contains the list of supported protocols in wire 1629 * format. 1630 */ 1631 unsigned char *alpn; 1632 size_t alpn_len; 1633 /* 1634 * Next protocol negotiation. For the client, this is the protocol that 1635 * we sent in NextProtocol and is set when handling ServerHello 1636 * extensions. For a server, this is the client's selected_protocol from 1637 * NextProtocol and is set when handling the NextProtocol message, before 1638 * the Finished message. 1639 */ 1640 unsigned char *npn; 1641 size_t npn_len; 1642 1643 /* The available PSK key exchange modes */ 1644 int psk_kex_mode; 1645 1646 /* Set to one if we have negotiated ETM */ 1647 int use_etm; 1648 1649 /* Are we expecting to receive early data? */ 1650 int early_data; 1651 /* Is the session suitable for early data? */ 1652 int early_data_ok; 1653 1654 /* May be sent by a server in HRR. Must be echoed back in ClientHello */ 1655 unsigned char *tls13_cookie; 1656 size_t tls13_cookie_len; 1657 /* Have we received a cookie from the client? */ 1658 int cookieok; 1659 1660 /* 1661 * Maximum Fragment Length as per RFC 4366. 1662 * If this member contains one of the allowed values (1-4) 1663 * then we should include Maximum Fragment Length Negotiation 1664 * extension in Client Hello. 1665 * Please note that value of this member does not have direct 1666 * effect. The actual (binding) value is stored in SSL_SESSION, 1667 * as this extension is optional on server side. 1668 */ 1669 uint8_t max_fragment_len_mode; 1670 1671 /* 1672 * On the client side the number of ticket identities we sent in the 1673 * ClientHello. On the server side the identity of the ticket we 1674 * selected. 1675 */ 1676 int tick_identity; 1677 } ext; 1678 1679 /* 1680 * Parsed form of the ClientHello, kept around across client_hello_cb 1681 * calls. 1682 */ 1683 CLIENTHELLO_MSG *clienthello; 1684 1685 /*- 1686 * no further mod of servername 1687 * 0 : call the servername extension callback. 1688 * 1 : prepare 2, allow last ack just after in server callback. 1689 * 2 : don't call servername callback, no ack in server hello 1690 */ 1691 int servername_done; 1692 # ifndef OPENSSL_NO_CT 1693 /* 1694 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient. 1695 * If they are not, the connection should be aborted. 1696 */ 1697 ssl_ct_validation_cb ct_validation_callback; 1698 /* User-supplied argument that is passed to the ct_validation_callback */ 1699 void *ct_validation_callback_arg; 1700 /* 1701 * Consolidated stack of SCTs from all sources. 1702 * Lazily populated by CT_get_peer_scts(SSL*) 1703 */ 1704 STACK_OF(SCT) *scts; 1705 /* Have we attempted to find/parse SCTs yet? */ 1706 int scts_parsed; 1707 # endif 1708 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */ 1709 # ifndef OPENSSL_NO_SRTP 1710 /* What we'll do */ 1711 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; 1712 /* What's been chosen */ 1713 SRTP_PROTECTION_PROFILE *srtp_profile; 1714 # endif 1715 /*- 1716 * 1 if we are renegotiating. 1717 * 2 if we are a server and are inside a handshake 1718 * (i.e. not just sending a HelloRequest) 1719 */ 1720 int renegotiate; 1721 /* If sending a KeyUpdate is pending */ 1722 int key_update; 1723 /* Post-handshake authentication state */ 1724 SSL_PHA_STATE post_handshake_auth; 1725 int pha_enabled; 1726 uint8_t* pha_context; 1727 size_t pha_context_len; 1728 int certreqs_sent; 1729 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */ 1730 1731 # ifndef OPENSSL_NO_SRP 1732 /* ctx for SRP authentication */ 1733 SRP_CTX srp_ctx; 1734 # endif 1735 /* 1736 * Callback for disabling session caching and ticket support on a session 1737 * basis, depending on the chosen cipher. 1738 */ 1739 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure); 1740 RECORD_LAYER rlayer; 1741 /* Default password callback. */ 1742 pem_password_cb *default_passwd_callback; 1743 /* Default password callback user data. */ 1744 void *default_passwd_callback_userdata; 1745 /* Async Job info */ 1746 ASYNC_JOB *job; 1747 ASYNC_WAIT_CTX *waitctx; 1748 size_t asyncrw; 1749 1750 /* 1751 * The maximum number of bytes advertised in session tickets that can be 1752 * sent as early data. 1753 */ 1754 uint32_t max_early_data; 1755 /* 1756 * The maximum number of bytes of early data that a server will tolerate 1757 * (which should be at least as much as max_early_data). 1758 */ 1759 uint32_t recv_max_early_data; 1760 1761 /* 1762 * The number of bytes of early data received so far. If we accepted early 1763 * data then this is a count of the plaintext bytes. If we rejected it then 1764 * this is a count of the ciphertext bytes. 1765 */ 1766 uint32_t early_data_count; 1767 1768 /* TLS1.3 padding callback */ 1769 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg); 1770 void *record_padding_arg; 1771 size_t block_padding; 1772 1773 CRYPTO_RWLOCK *lock; 1774 1775 /* The number of TLS1.3 tickets to automatically send */ 1776 size_t num_tickets; 1777 /* The number of TLS1.3 tickets actually sent so far */ 1778 size_t sent_tickets; 1779 /* The next nonce value to use when we send a ticket on this connection */ 1780 uint64_t next_ticket_nonce; 1781 1782 /* Callback to determine if early_data is acceptable or not */ 1783 SSL_allow_early_data_cb_fn allow_early_data_cb; 1784 void *allow_early_data_cb_data; 1785 1786 /* Callback for SSL async handling */ 1787 SSL_async_callback_fn async_cb; 1788 void *async_cb_arg; 1789 1790 /* 1791 * Signature algorithms shared by client and server: cached because these 1792 * are used most often. 1793 */ 1794 const struct sigalg_lookup_st **shared_sigalgs; 1795 size_t shared_sigalgslen; 1796 }; 1797 1798 /* 1799 * Structure containing table entry of values associated with the signature 1800 * algorithms (signature scheme) extension 1801 */ 1802 typedef struct sigalg_lookup_st { 1803 /* TLS 1.3 signature scheme name */ 1804 const char *name; 1805 /* Raw value used in extension */ 1806 uint16_t sigalg; 1807 /* NID of hash algorithm or NID_undef if no hash */ 1808 int hash; 1809 /* Index of hash algorithm or -1 if no hash algorithm */ 1810 int hash_idx; 1811 /* NID of signature algorithm */ 1812 int sig; 1813 /* Index of signature algorithm */ 1814 int sig_idx; 1815 /* Combined hash and signature NID, if any */ 1816 int sigandhash; 1817 /* Required public key curve (ECDSA only) */ 1818 int curve; 1819 /* Whether this signature algorithm is actually available for use */ 1820 int enabled; 1821 } SIGALG_LOOKUP; 1822 1823 /* 1824 * Structure containing table entry of certificate info corresponding to 1825 * CERT_PKEY entries 1826 */ 1827 typedef struct { 1828 int nid; /* NID of public key algorithm */ 1829 uint32_t amask; /* authmask corresponding to key type */ 1830 } SSL_CERT_LOOKUP; 1831 1832 /* DTLS structures */ 1833 1834 # ifndef OPENSSL_NO_SCTP 1835 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" 1836 # endif 1837 1838 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */ 1839 # define DTLS1_MAX_MTU_OVERHEAD 48 1840 1841 /* 1842 * Flag used in message reuse to indicate the buffer contains the record 1843 * header as well as the handshake message header. 1844 */ 1845 # define DTLS1_SKIP_RECORD_HEADER 2 1846 1847 struct dtls1_retransmit_state { 1848 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 1849 EVP_MD_CTX *write_hash; /* used for mac generation */ 1850 COMP_CTX *compress; /* compression */ 1851 SSL_SESSION *session; 1852 unsigned short epoch; 1853 }; 1854 1855 struct hm_header_st { 1856 unsigned char type; 1857 size_t msg_len; 1858 unsigned short seq; 1859 size_t frag_off; 1860 size_t frag_len; 1861 unsigned int is_ccs; 1862 struct dtls1_retransmit_state saved_retransmit_state; 1863 }; 1864 1865 typedef struct hm_fragment_st { 1866 struct hm_header_st msg_header; 1867 unsigned char *fragment; 1868 unsigned char *reassembly; 1869 } hm_fragment; 1870 1871 typedef struct pqueue_st pqueue; 1872 typedef struct pitem_st pitem; 1873 1874 struct pitem_st { 1875 unsigned char priority[8]; /* 64-bit value in big-endian encoding */ 1876 void *data; 1877 pitem *next; 1878 }; 1879 1880 typedef struct pitem_st *piterator; 1881 1882 pitem *pitem_new(unsigned char *prio64be, void *data); 1883 void pitem_free(pitem *item); 1884 pqueue *pqueue_new(void); 1885 void pqueue_free(pqueue *pq); 1886 pitem *pqueue_insert(pqueue *pq, pitem *item); 1887 pitem *pqueue_peek(pqueue *pq); 1888 pitem *pqueue_pop(pqueue *pq); 1889 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be); 1890 pitem *pqueue_iterator(pqueue *pq); 1891 pitem *pqueue_next(piterator *iter); 1892 size_t pqueue_size(pqueue *pq); 1893 1894 typedef struct dtls1_state_st { 1895 unsigned char cookie[DTLS1_COOKIE_LENGTH]; 1896 size_t cookie_len; 1897 unsigned int cookie_verified; 1898 /* handshake message numbers */ 1899 unsigned short handshake_write_seq; 1900 unsigned short next_handshake_write_seq; 1901 unsigned short handshake_read_seq; 1902 /* Buffered handshake messages */ 1903 pqueue *buffered_messages; 1904 /* Buffered (sent) handshake records */ 1905 pqueue *sent_messages; 1906 size_t link_mtu; /* max on-the-wire DTLS packet size */ 1907 size_t mtu; /* max DTLS packet size */ 1908 struct hm_header_st w_msg_hdr; 1909 struct hm_header_st r_msg_hdr; 1910 /* Number of alerts received so far */ 1911 unsigned int timeout_num_alerts; 1912 /* 1913 * Indicates when the last handshake msg sent will timeout 1914 */ 1915 struct timeval next_timeout; 1916 /* Timeout duration */ 1917 unsigned int timeout_duration_us; 1918 1919 unsigned int retransmitting; 1920 # ifndef OPENSSL_NO_SCTP 1921 int shutdown_received; 1922 # endif 1923 1924 DTLS_timer_cb timer_cb; 1925 1926 } DTLS1_STATE; 1927 1928 /* 1929 * From ECC-TLS draft, used in encoding the curve type in ECParameters 1930 */ 1931 # define EXPLICIT_PRIME_CURVE_TYPE 1 1932 # define EXPLICIT_CHAR2_CURVE_TYPE 2 1933 # define NAMED_CURVE_TYPE 3 1934 1935 struct cert_pkey_st { 1936 X509 *x509; 1937 EVP_PKEY *privatekey; 1938 /* Chain for this certificate */ 1939 STACK_OF(X509) *chain; 1940 /*- 1941 * serverinfo data for this certificate. The data is in TLS Extension 1942 * wire format, specifically it's a series of records like: 1943 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension) 1944 * uint16_t length; 1945 * uint8_t data[length]; 1946 */ 1947 unsigned char *serverinfo; 1948 size_t serverinfo_length; 1949 }; 1950 /* Retrieve Suite B flags */ 1951 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS) 1952 /* Uses to check strict mode: suite B modes are always strict */ 1953 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \ 1954 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT) 1955 1956 typedef enum { 1957 ENDPOINT_CLIENT = 0, 1958 ENDPOINT_SERVER, 1959 ENDPOINT_BOTH 1960 } ENDPOINT; 1961 1962 1963 typedef struct { 1964 unsigned short ext_type; 1965 ENDPOINT role; 1966 /* The context which this extension applies to */ 1967 unsigned int context; 1968 /* 1969 * Per-connection flags relating to this extension type: not used if 1970 * part of an SSL_CTX structure. 1971 */ 1972 uint32_t ext_flags; 1973 SSL_custom_ext_add_cb_ex add_cb; 1974 SSL_custom_ext_free_cb_ex free_cb; 1975 void *add_arg; 1976 SSL_custom_ext_parse_cb_ex parse_cb; 1977 void *parse_arg; 1978 } custom_ext_method; 1979 1980 /* ext_flags values */ 1981 1982 /* 1983 * Indicates an extension has been received. Used to check for unsolicited or 1984 * duplicate extensions. 1985 */ 1986 # define SSL_EXT_FLAG_RECEIVED 0x1 1987 /* 1988 * Indicates an extension has been sent: used to enable sending of 1989 * corresponding ServerHello extension. 1990 */ 1991 # define SSL_EXT_FLAG_SENT 0x2 1992 1993 typedef struct { 1994 custom_ext_method *meths; 1995 size_t meths_count; 1996 } custom_ext_methods; 1997 1998 typedef struct cert_st { 1999 /* Current active set */ 2000 /* 2001 * ALWAYS points to an element of the pkeys array 2002 * Probably it would make more sense to store 2003 * an index, not a pointer. 2004 */ 2005 CERT_PKEY *key; 2006 2007 EVP_PKEY *dh_tmp; 2008 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize); 2009 int dh_tmp_auto; 2010 /* Flags related to certificates */ 2011 uint32_t cert_flags; 2012 CERT_PKEY pkeys[SSL_PKEY_NUM]; 2013 /* Custom certificate types sent in certificate request message. */ 2014 uint8_t *ctype; 2015 size_t ctype_len; 2016 /* 2017 * supported signature algorithms. When set on a client this is sent in 2018 * the client hello as the supported signature algorithms extension. For 2019 * servers it represents the signature algorithms we are willing to use. 2020 */ 2021 uint16_t *conf_sigalgs; 2022 /* Size of above array */ 2023 size_t conf_sigalgslen; 2024 /* 2025 * Client authentication signature algorithms, if not set then uses 2026 * conf_sigalgs. On servers these will be the signature algorithms sent 2027 * to the client in a certificate request for TLS 1.2. On a client this 2028 * represents the signature algorithms we are willing to use for client 2029 * authentication. 2030 */ 2031 uint16_t *client_sigalgs; 2032 /* Size of above array */ 2033 size_t client_sigalgslen; 2034 /* 2035 * Certificate setup callback: if set is called whenever a certificate 2036 * may be required (client or server). the callback can then examine any 2037 * appropriate parameters and setup any certificates required. This 2038 * allows advanced applications to select certificates on the fly: for 2039 * example based on supported signature algorithms or curves. 2040 */ 2041 int (*cert_cb) (SSL *ssl, void *arg); 2042 void *cert_cb_arg; 2043 /* 2044 * Optional X509_STORE for chain building or certificate validation If 2045 * NULL the parent SSL_CTX store is used instead. 2046 */ 2047 X509_STORE *chain_store; 2048 X509_STORE *verify_store; 2049 /* Custom extensions */ 2050 custom_ext_methods custext; 2051 /* Security callback */ 2052 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid, 2053 void *other, void *ex); 2054 /* Security level */ 2055 int sec_level; 2056 void *sec_ex; 2057 # ifndef OPENSSL_NO_PSK 2058 /* If not NULL psk identity hint to use for servers */ 2059 char *psk_identity_hint; 2060 # endif 2061 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */ 2062 CRYPTO_RWLOCK *lock; 2063 } CERT; 2064 2065 # define FP_ICC (int (*)(const void *,const void *)) 2066 2067 /* 2068 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit 2069 * of a mess of functions, but hell, think of it as an opaque structure :-) 2070 */ 2071 typedef struct ssl3_enc_method { 2072 int (*enc) (SSL *, SSL3_RECORD *, size_t, int, SSL_MAC_BUF *, size_t); 2073 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int); 2074 int (*setup_key_block) (SSL *); 2075 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *, 2076 size_t, size_t *); 2077 int (*change_cipher_state) (SSL *, int); 2078 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *); 2079 const char *client_finished_label; 2080 size_t client_finished_label_len; 2081 const char *server_finished_label; 2082 size_t server_finished_label_len; 2083 int (*alert_value) (int); 2084 int (*export_keying_material) (SSL *, unsigned char *, size_t, 2085 const char *, size_t, 2086 const unsigned char *, size_t, 2087 int use_context); 2088 /* Various flags indicating protocol version requirements */ 2089 uint32_t enc_flags; 2090 /* Set the handshake header */ 2091 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type); 2092 /* Close construction of the handshake message */ 2093 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype); 2094 /* Write out handshake message */ 2095 int (*do_write) (SSL *s); 2096 } SSL3_ENC_METHOD; 2097 2098 # define ssl_set_handshake_header(s, pkt, htype) \ 2099 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype)) 2100 # define ssl_close_construct_packet(s, pkt, htype) \ 2101 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype)) 2102 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s) 2103 2104 /* Values for enc_flags */ 2105 2106 /* Uses explicit IV for CBC mode */ 2107 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1 2108 /* Uses signature algorithms extension */ 2109 # define SSL_ENC_FLAG_SIGALGS 0x2 2110 /* Uses SHA256 default PRF */ 2111 # define SSL_ENC_FLAG_SHA256_PRF 0x4 2112 /* Is DTLS */ 2113 # define SSL_ENC_FLAG_DTLS 0x8 2114 /* 2115 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may 2116 * apply to others in future. 2117 */ 2118 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10 2119 2120 # ifndef OPENSSL_NO_COMP 2121 /* Used for holding the relevant compression methods loaded into SSL_CTX */ 2122 typedef struct ssl3_comp_st { 2123 int comp_id; /* The identifier byte for this compression 2124 * type */ 2125 char *name; /* Text name used for the compression type */ 2126 COMP_METHOD *method; /* The method :-) */ 2127 } SSL3_COMP; 2128 # endif 2129 2130 typedef enum downgrade_en { 2131 DOWNGRADE_NONE, 2132 DOWNGRADE_TO_1_2, 2133 DOWNGRADE_TO_1_1 2134 } DOWNGRADE; 2135 2136 /* 2137 * Dummy status type for the status_type extension. Indicates no status type 2138 * set 2139 */ 2140 #define TLSEXT_STATUSTYPE_nothing -1 2141 2142 /* Sigalgs values */ 2143 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403 2144 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503 2145 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603 2146 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303 2147 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203 2148 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804 2149 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805 2150 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806 2151 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809 2152 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a 2153 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b 2154 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401 2155 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501 2156 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601 2157 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301 2158 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201 2159 #define TLSEXT_SIGALG_dsa_sha256 0x0402 2160 #define TLSEXT_SIGALG_dsa_sha384 0x0502 2161 #define TLSEXT_SIGALG_dsa_sha512 0x0602 2162 #define TLSEXT_SIGALG_dsa_sha224 0x0302 2163 #define TLSEXT_SIGALG_dsa_sha1 0x0202 2164 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840 2165 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841 2166 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee 2167 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef 2168 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded 2169 2170 #define TLSEXT_SIGALG_ed25519 0x0807 2171 #define TLSEXT_SIGALG_ed448 0x0808 2172 2173 /* Known PSK key exchange modes */ 2174 #define TLSEXT_KEX_MODE_KE 0x00 2175 #define TLSEXT_KEX_MODE_KE_DHE 0x01 2176 2177 /* 2178 * Internal representations of key exchange modes 2179 */ 2180 #define TLSEXT_KEX_MODE_FLAG_NONE 0 2181 #define TLSEXT_KEX_MODE_FLAG_KE 1 2182 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2 2183 2184 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \ 2185 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS) 2186 2187 /* A dummy signature value not valid for TLSv1.2 signature algs */ 2188 #define TLSEXT_signature_rsa_pss 0x0101 2189 2190 /* TLSv1.3 downgrade protection sentinel values */ 2191 extern const unsigned char tls11downgrade[8]; 2192 extern const unsigned char tls12downgrade[8]; 2193 2194 extern SSL3_ENC_METHOD ssl3_undef_enc_method; 2195 2196 __owur const SSL_METHOD *ssl_bad_method(int ver); 2197 __owur const SSL_METHOD *sslv3_method(void); 2198 __owur const SSL_METHOD *sslv3_server_method(void); 2199 __owur const SSL_METHOD *sslv3_client_method(void); 2200 __owur const SSL_METHOD *tlsv1_method(void); 2201 __owur const SSL_METHOD *tlsv1_server_method(void); 2202 __owur const SSL_METHOD *tlsv1_client_method(void); 2203 __owur const SSL_METHOD *tlsv1_1_method(void); 2204 __owur const SSL_METHOD *tlsv1_1_server_method(void); 2205 __owur const SSL_METHOD *tlsv1_1_client_method(void); 2206 __owur const SSL_METHOD *tlsv1_2_method(void); 2207 __owur const SSL_METHOD *tlsv1_2_server_method(void); 2208 __owur const SSL_METHOD *tlsv1_2_client_method(void); 2209 __owur const SSL_METHOD *tlsv1_3_method(void); 2210 __owur const SSL_METHOD *tlsv1_3_server_method(void); 2211 __owur const SSL_METHOD *tlsv1_3_client_method(void); 2212 __owur const SSL_METHOD *dtlsv1_method(void); 2213 __owur const SSL_METHOD *dtlsv1_server_method(void); 2214 __owur const SSL_METHOD *dtlsv1_client_method(void); 2215 __owur const SSL_METHOD *dtls_bad_ver_client_method(void); 2216 __owur const SSL_METHOD *dtlsv1_2_method(void); 2217 __owur const SSL_METHOD *dtlsv1_2_server_method(void); 2218 __owur const SSL_METHOD *dtlsv1_2_client_method(void); 2219 2220 extern const SSL3_ENC_METHOD TLSv1_enc_data; 2221 extern const SSL3_ENC_METHOD TLSv1_1_enc_data; 2222 extern const SSL3_ENC_METHOD TLSv1_2_enc_data; 2223 extern const SSL3_ENC_METHOD TLSv1_3_enc_data; 2224 extern const SSL3_ENC_METHOD SSLv3_enc_data; 2225 extern const SSL3_ENC_METHOD DTLSv1_enc_data; 2226 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data; 2227 2228 /* 2229 * Flags for SSL methods 2230 */ 2231 # define SSL_METHOD_NO_FIPS (1U<<0) 2232 # define SSL_METHOD_NO_SUITEB (1U<<1) 2233 2234 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \ 2235 s_connect, enc_data) \ 2236 const SSL_METHOD *func_name(void) \ 2237 { \ 2238 static const SSL_METHOD func_name##_data= { \ 2239 version, \ 2240 flags, \ 2241 mask, \ 2242 tls1_new, \ 2243 tls1_clear, \ 2244 tls1_free, \ 2245 s_accept, \ 2246 s_connect, \ 2247 ssl3_read, \ 2248 ssl3_peek, \ 2249 ssl3_write, \ 2250 ssl3_shutdown, \ 2251 ssl3_renegotiate, \ 2252 ssl3_renegotiate_check, \ 2253 ssl3_read_bytes, \ 2254 ssl3_write_bytes, \ 2255 ssl3_dispatch_alert, \ 2256 ssl3_ctrl, \ 2257 ssl3_ctx_ctrl, \ 2258 ssl3_get_cipher_by_char, \ 2259 ssl3_put_cipher_by_char, \ 2260 ssl3_pending, \ 2261 ssl3_num_ciphers, \ 2262 ssl3_get_cipher, \ 2263 tls1_default_timeout, \ 2264 &enc_data, \ 2265 ssl_undefined_void_function, \ 2266 ssl3_callback_ctrl, \ 2267 ssl3_ctx_callback_ctrl, \ 2268 }; \ 2269 return &func_name##_data; \ 2270 } 2271 2272 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \ 2273 const SSL_METHOD *func_name(void) \ 2274 { \ 2275 static const SSL_METHOD func_name##_data= { \ 2276 SSL3_VERSION, \ 2277 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \ 2278 SSL_OP_NO_SSLv3, \ 2279 ssl3_new, \ 2280 ssl3_clear, \ 2281 ssl3_free, \ 2282 s_accept, \ 2283 s_connect, \ 2284 ssl3_read, \ 2285 ssl3_peek, \ 2286 ssl3_write, \ 2287 ssl3_shutdown, \ 2288 ssl3_renegotiate, \ 2289 ssl3_renegotiate_check, \ 2290 ssl3_read_bytes, \ 2291 ssl3_write_bytes, \ 2292 ssl3_dispatch_alert, \ 2293 ssl3_ctrl, \ 2294 ssl3_ctx_ctrl, \ 2295 ssl3_get_cipher_by_char, \ 2296 ssl3_put_cipher_by_char, \ 2297 ssl3_pending, \ 2298 ssl3_num_ciphers, \ 2299 ssl3_get_cipher, \ 2300 ssl3_default_timeout, \ 2301 &SSLv3_enc_data, \ 2302 ssl_undefined_void_function, \ 2303 ssl3_callback_ctrl, \ 2304 ssl3_ctx_callback_ctrl, \ 2305 }; \ 2306 return &func_name##_data; \ 2307 } 2308 2309 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \ 2310 s_connect, enc_data) \ 2311 const SSL_METHOD *func_name(void) \ 2312 { \ 2313 static const SSL_METHOD func_name##_data= { \ 2314 version, \ 2315 flags, \ 2316 mask, \ 2317 dtls1_new, \ 2318 dtls1_clear, \ 2319 dtls1_free, \ 2320 s_accept, \ 2321 s_connect, \ 2322 ssl3_read, \ 2323 ssl3_peek, \ 2324 ssl3_write, \ 2325 dtls1_shutdown, \ 2326 ssl3_renegotiate, \ 2327 ssl3_renegotiate_check, \ 2328 dtls1_read_bytes, \ 2329 dtls1_write_app_data_bytes, \ 2330 dtls1_dispatch_alert, \ 2331 dtls1_ctrl, \ 2332 ssl3_ctx_ctrl, \ 2333 ssl3_get_cipher_by_char, \ 2334 ssl3_put_cipher_by_char, \ 2335 ssl3_pending, \ 2336 ssl3_num_ciphers, \ 2337 ssl3_get_cipher, \ 2338 dtls1_default_timeout, \ 2339 &enc_data, \ 2340 ssl_undefined_void_function, \ 2341 ssl3_callback_ctrl, \ 2342 ssl3_ctx_callback_ctrl, \ 2343 }; \ 2344 return &func_name##_data; \ 2345 } 2346 2347 struct openssl_ssl_test_functions { 2348 int (*p_ssl_init_wbio_buffer) (SSL *s); 2349 int (*p_ssl3_setup_buffers) (SSL *s); 2350 }; 2351 2352 const char *ssl_protocol_to_string(int version); 2353 2354 /* Returns true if certificate and private key for 'idx' are present */ 2355 static ossl_inline int ssl_has_cert(const SSL *s, int idx) 2356 { 2357 if (idx < 0 || idx >= SSL_PKEY_NUM) 2358 return 0; 2359 return s->cert->pkeys[idx].x509 != NULL 2360 && s->cert->pkeys[idx].privatekey != NULL; 2361 } 2362 2363 static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups, 2364 size_t *pgroupslen) 2365 { 2366 *pgroups = s->ext.peer_supportedgroups; 2367 *pgroupslen = s->ext.peer_supportedgroups_len; 2368 } 2369 2370 # ifndef OPENSSL_UNIT_TEST 2371 2372 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes); 2373 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written); 2374 void ssl_clear_cipher_ctx(SSL *s); 2375 int ssl_clear_bad_session(SSL *s); 2376 __owur CERT *ssl_cert_new(void); 2377 __owur CERT *ssl_cert_dup(CERT *cert); 2378 void ssl_cert_clear_certs(CERT *c); 2379 void ssl_cert_free(CERT *c); 2380 __owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss); 2381 __owur int ssl_get_new_session(SSL *s, int session); 2382 __owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, 2383 size_t sess_id_len); 2384 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello); 2385 __owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket); 2386 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 2387 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2388 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 2389 const SSL_CIPHER *const *bp); 2390 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx, 2391 STACK_OF(SSL_CIPHER) *tls13_ciphersuites, 2392 STACK_OF(SSL_CIPHER) **cipher_list, 2393 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 2394 const char *rule_str, 2395 CERT *c); 2396 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format); 2397 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, 2398 STACK_OF(SSL_CIPHER) **skp, 2399 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format, 2400 int fatal); 2401 void ssl_update_cache(SSL *s, int mode); 2402 __owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc, 2403 const EVP_CIPHER **enc); 2404 __owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s, 2405 const EVP_CIPHER **enc, const EVP_MD **md, 2406 int *mac_pkey_type, size_t *mac_secret_size, 2407 SSL_COMP **comp, int use_etm); 2408 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, 2409 size_t *int_overhead, size_t *blocksize, 2410 size_t *ext_overhead); 2411 __owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx); 2412 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, 2413 const unsigned char *ptr, 2414 int all); 2415 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2416 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain); 2417 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2418 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x); 2419 __owur int ssl_cert_select_current(CERT *c, X509 *x); 2420 __owur int ssl_cert_set_current(CERT *c, long arg); 2421 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg); 2422 2423 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 2424 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags); 2425 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, 2426 int ref); 2427 2428 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other); 2429 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, 2430 void *other); 2431 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp); 2432 2433 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx); 2434 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, 2435 size_t *pidx); 2436 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx); 2437 2438 int ssl_undefined_function(SSL *s); 2439 __owur int ssl_undefined_void_function(void); 2440 __owur int ssl_undefined_const_function(const SSL *s); 2441 __owur int ssl_get_server_cert_serverinfo(SSL *s, 2442 const unsigned char **serverinfo, 2443 size_t *serverinfo_length); 2444 void ssl_set_masks(SSL *s); 2445 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 2446 __owur int ssl_x509err2alert(int type); 2447 void ssl_sort_cipher_list(void); 2448 int ssl_load_ciphers(SSL_CTX *ctx); 2449 __owur int ssl_setup_sig_algs(SSL_CTX *ctx); 2450 int ssl_load_groups(SSL_CTX *ctx); 2451 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, 2452 size_t len, DOWNGRADE dgrd); 2453 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen, 2454 int free_pms); 2455 __owur EVP_PKEY *ssl_generate_pkey(SSL *s, EVP_PKEY *pm); 2456 __owur int ssl_gensecret(SSL *s, unsigned char *pms, size_t pmslen); 2457 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey, 2458 int genmaster); 2459 __owur int ssl_decapsulate(SSL *s, EVP_PKEY *privkey, 2460 const unsigned char *ct, size_t ctlen, 2461 int gensecret); 2462 __owur int ssl_encapsulate(SSL *s, EVP_PKEY *pubkey, 2463 unsigned char **ctp, size_t *ctlenp, 2464 int gensecret); 2465 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh); 2466 __owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen, 2467 void *key); 2468 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl); 2469 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl); 2470 2471 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id); 2472 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname); 2473 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 2474 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt, 2475 size_t *len); 2476 int ssl3_init_finished_mac(SSL *s); 2477 __owur int ssl3_setup_key_block(SSL *s); 2478 __owur int ssl3_change_cipher_state(SSL *s, int which); 2479 void ssl3_cleanup_key_block(SSL *s); 2480 __owur int ssl3_do_write(SSL *s, int type); 2481 int ssl3_send_alert(SSL *s, int level, int desc); 2482 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out, 2483 unsigned char *p, size_t len, 2484 size_t *secret_size); 2485 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt); 2486 __owur int ssl3_num_ciphers(void); 2487 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 2488 int ssl3_renegotiate(SSL *ssl); 2489 int ssl3_renegotiate_check(SSL *ssl, int initok); 2490 void ssl3_digest_master_key_set_params(const SSL_SESSION *session, 2491 OSSL_PARAM params[]); 2492 __owur int ssl3_dispatch_alert(SSL *s); 2493 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen, 2494 unsigned char *p); 2495 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len); 2496 void ssl3_free_digest_list(SSL *s); 2497 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, 2498 CERT_PKEY *cpk); 2499 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, 2500 STACK_OF(SSL_CIPHER) *clnt, 2501 STACK_OF(SSL_CIPHER) *srvr); 2502 __owur int ssl3_digest_cached_records(SSL *s, int keep); 2503 __owur int ssl3_new(SSL *s); 2504 void ssl3_free(SSL *s); 2505 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes); 2506 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes); 2507 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written); 2508 __owur int ssl3_shutdown(SSL *s); 2509 int ssl3_clear(SSL *s); 2510 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 2511 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 2512 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void)); 2513 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void)); 2514 2515 __owur int ssl3_do_change_cipher_spec(SSL *ssl); 2516 __owur long ssl3_default_timeout(void); 2517 2518 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2519 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2520 __owur int tls_setup_handshake(SSL *s); 2521 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype); 2522 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype); 2523 __owur int ssl3_handshake_write(SSL *s); 2524 2525 __owur int ssl_allow_compression(SSL *s); 2526 2527 __owur int ssl_version_supported(const SSL *s, int version, 2528 const SSL_METHOD **meth); 2529 2530 __owur int ssl_set_client_hello_version(SSL *s); 2531 __owur int ssl_check_version_downgrade(SSL *s); 2532 __owur int ssl_set_version_bound(int method_version, int version, int *bound); 2533 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello, 2534 DOWNGRADE *dgrd); 2535 __owur int ssl_choose_client_version(SSL *s, int version, 2536 RAW_EXTENSION *extensions); 2537 __owur int ssl_get_min_max_version(const SSL *s, int *min_version, 2538 int *max_version, int *real_max); 2539 2540 __owur long tls1_default_timeout(void); 2541 __owur int dtls1_do_write(SSL *s, int type); 2542 void dtls1_set_message_header(SSL *s, 2543 unsigned char mt, 2544 size_t len, 2545 size_t frag_off, size_t frag_len); 2546 2547 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len, 2548 size_t *written); 2549 2550 __owur int dtls1_read_failed(SSL *s, int code); 2551 __owur int dtls1_buffer_message(SSL *s, int ccs); 2552 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found); 2553 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 2554 int dtls1_retransmit_buffered_messages(SSL *s); 2555 void dtls1_clear_received_buffer(SSL *s); 2556 void dtls1_clear_sent_buffer(SSL *s); 2557 void dtls1_get_message_header(unsigned char *data, 2558 struct hm_header_st *msg_hdr); 2559 __owur long dtls1_default_timeout(void); 2560 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft); 2561 __owur int dtls1_check_timeout_num(SSL *s); 2562 __owur int dtls1_handle_timeout(SSL *s); 2563 void dtls1_start_timer(SSL *s); 2564 void dtls1_stop_timer(SSL *s); 2565 __owur int dtls1_is_timer_expired(SSL *s); 2566 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie, 2567 size_t cookie_len); 2568 __owur size_t dtls1_min_mtu(SSL *s); 2569 void dtls1_hm_fragment_free(hm_fragment *frag); 2570 __owur int dtls1_query_mtu(SSL *s); 2571 2572 __owur int tls1_new(SSL *s); 2573 void tls1_free(SSL *s); 2574 int tls1_clear(SSL *s); 2575 2576 __owur int dtls1_new(SSL *s); 2577 void dtls1_free(SSL *s); 2578 int dtls1_clear(SSL *s); 2579 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 2580 __owur int dtls1_shutdown(SSL *s); 2581 2582 __owur int dtls1_dispatch_alert(SSL *s); 2583 2584 __owur int ssl_init_wbio_buffer(SSL *s); 2585 int ssl_free_wbio_buffer(SSL *s); 2586 2587 __owur int tls1_change_cipher_state(SSL *s, int which); 2588 __owur int tls1_setup_key_block(SSL *s); 2589 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, 2590 unsigned char *p); 2591 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out, 2592 unsigned char *p, size_t len, 2593 size_t *secret_size); 2594 __owur int tls13_setup_key_block(SSL *s); 2595 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen, 2596 unsigned char *p); 2597 __owur int tls13_change_cipher_state(SSL *s, int which); 2598 __owur int tls13_update_key(SSL *s, int send); 2599 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md, 2600 const unsigned char *secret, 2601 const unsigned char *label, size_t labellen, 2602 const unsigned char *data, size_t datalen, 2603 unsigned char *out, size_t outlen, int fatal); 2604 __owur int tls13_derive_key(SSL *s, const EVP_MD *md, 2605 const unsigned char *secret, unsigned char *key, 2606 size_t keylen); 2607 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md, 2608 const unsigned char *secret, unsigned char *iv, 2609 size_t ivlen); 2610 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md, 2611 const unsigned char *secret, 2612 unsigned char *fin, size_t finlen); 2613 int tls13_generate_secret(SSL *s, const EVP_MD *md, 2614 const unsigned char *prevsecret, 2615 const unsigned char *insecret, 2616 size_t insecretlen, 2617 unsigned char *outsecret); 2618 __owur int tls13_generate_handshake_secret(SSL *s, 2619 const unsigned char *insecret, 2620 size_t insecretlen); 2621 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out, 2622 unsigned char *prev, size_t prevlen, 2623 size_t *secret_size); 2624 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2625 const char *label, size_t llen, 2626 const unsigned char *p, size_t plen, 2627 int use_context); 2628 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen, 2629 const char *label, size_t llen, 2630 const unsigned char *context, 2631 size_t contextlen, int use_context); 2632 __owur int tls13_export_keying_material_early(SSL *s, unsigned char *out, 2633 size_t olen, const char *label, 2634 size_t llen, 2635 const unsigned char *context, 2636 size_t contextlen); 2637 __owur int tls1_alert_code(int code); 2638 __owur int tls13_alert_code(int code); 2639 __owur int ssl3_alert_code(int code); 2640 2641 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 2642 2643 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); 2644 2645 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id); 2646 __owur int tls1_group_id2nid(uint16_t group_id, int include_unknown); 2647 __owur uint16_t tls1_nid2group_id(int nid); 2648 __owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves); 2649 __owur uint16_t tls1_shared_group(SSL *s, int nmatch); 2650 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen, 2651 int *curves, size_t ncurves); 2652 __owur int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen, 2653 const char *str); 2654 __owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id); 2655 __owur int tls_valid_group(SSL *s, uint16_t group_id, int minversion, 2656 int maxversion, int isec, int *okfortls13); 2657 __owur EVP_PKEY *ssl_generate_param_group(SSL *s, uint16_t id); 2658 void tls1_get_formatlist(SSL *s, const unsigned char **pformats, 2659 size_t *num_formats); 2660 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id); 2661 2662 __owur int tls_group_allowed(SSL *s, uint16_t curve, int op); 2663 void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, 2664 size_t *pgroupslen); 2665 2666 __owur int tls1_set_server_sigalgs(SSL *s); 2667 2668 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello, 2669 SSL_SESSION **ret); 2670 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick, 2671 size_t eticklen, 2672 const unsigned char *sess_id, 2673 size_t sesslen, SSL_SESSION **psess); 2674 2675 __owur int tls_use_ticket(SSL *s); 2676 2677 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op); 2678 2679 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client); 2680 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen, 2681 int client); 2682 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, 2683 int client); 2684 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain, 2685 int idx); 2686 void tls1_set_cert_validity(SSL *s); 2687 2688 # ifndef OPENSSL_NO_CT 2689 __owur int ssl_validate_ct(SSL *s); 2690 # endif 2691 2692 __owur EVP_PKEY *ssl_get_auto_dh(SSL *s); 2693 2694 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee); 2695 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, 2696 int vfy); 2697 2698 int tls_choose_sigalg(SSL *s, int fatalerrs); 2699 2700 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md); 2701 void ssl_clear_hash_ctx(EVP_MD_CTX **hash); 2702 __owur long ssl_get_algorithm2(SSL *s); 2703 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt, 2704 const uint16_t *psig, size_t psiglen); 2705 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen); 2706 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert); 2707 __owur int tls1_process_sigalgs(SSL *s); 2708 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey); 2709 __owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu, 2710 const EVP_MD **pmd); 2711 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs); 2712 __owur int tls_check_sigalg_curve(const SSL *s, int curve); 2713 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey); 2714 __owur int ssl_set_client_disabled(SSL *s); 2715 __owur int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int echde); 2716 2717 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, 2718 size_t *hashlen); 2719 __owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx); 2720 __owur const EVP_MD *ssl_handshake_md(SSL *s); 2721 __owur const EVP_MD *ssl_prf_md(SSL *s); 2722 2723 /* 2724 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated 2725 * with |ssl|, if logging is enabled. It returns one on success and zero on 2726 * failure. The entry is identified by the first 8 bytes of 2727 * |encrypted_premaster|. 2728 */ 2729 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl, 2730 const uint8_t *encrypted_premaster, 2731 size_t encrypted_premaster_len, 2732 const uint8_t *premaster, 2733 size_t premaster_len); 2734 2735 /* 2736 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if 2737 * logging is available. It returns one on success and zero on failure. It tags 2738 * the entry with |label|. 2739 */ 2740 __owur int ssl_log_secret(SSL *ssl, const char *label, 2741 const uint8_t *secret, size_t secret_len); 2742 2743 #define MASTER_SECRET_LABEL "CLIENT_RANDOM" 2744 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET" 2745 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET" 2746 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET" 2747 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0" 2748 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0" 2749 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET" 2750 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET" 2751 2752 # ifndef OPENSSL_NO_KTLS 2753 /* ktls.c */ 2754 int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c, 2755 const EVP_CIPHER_CTX *dd); 2756 int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd, 2757 void *rl_sequence, ktls_crypto_info_t *crypto_info, 2758 unsigned char **rec_seq, unsigned char *iv, 2759 unsigned char *key, unsigned char *mac_key, 2760 size_t mac_secret_size); 2761 # endif 2762 2763 /* s3_cbc.c */ 2764 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 2765 __owur int ssl3_cbc_digest_record(const EVP_MD *md, 2766 unsigned char *md_out, 2767 size_t *md_out_size, 2768 const unsigned char *header, 2769 const unsigned char *data, 2770 size_t data_size, 2771 size_t data_plus_mac_plus_padding_size, 2772 const unsigned char *mac_secret, 2773 size_t mac_secret_length, char is_sslv3); 2774 2775 __owur int srp_generate_server_master_secret(SSL *s); 2776 __owur int srp_generate_client_master_secret(SSL *s); 2777 __owur int srp_verify_server_param(SSL *s); 2778 2779 /* statem/statem_srvr.c */ 2780 2781 __owur int send_certificate_request(SSL *s); 2782 2783 /* statem/extensions_cust.c */ 2784 2785 custom_ext_method *custom_ext_find(const custom_ext_methods *exts, 2786 ENDPOINT role, unsigned int ext_type, 2787 size_t *idx); 2788 2789 void custom_ext_init(custom_ext_methods *meths); 2790 2791 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type, 2792 const unsigned char *ext_data, size_t ext_size, 2793 X509 *x, size_t chainidx); 2794 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x, 2795 size_t chainidx, int maxversion); 2796 2797 __owur int custom_exts_copy(custom_ext_methods *dst, 2798 const custom_ext_methods *src); 2799 __owur int custom_exts_copy_flags(custom_ext_methods *dst, 2800 const custom_ext_methods *src); 2801 void custom_exts_free(custom_ext_methods *exts); 2802 2803 void ssl_comp_free_compression_methods_int(void); 2804 2805 /* ssl_mcnf.c */ 2806 void ssl_ctx_system_config(SSL_CTX *ctx); 2807 2808 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx, 2809 int nid, 2810 const char *properties); 2811 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher); 2812 void ssl_evp_cipher_free(const EVP_CIPHER *cipher); 2813 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx, 2814 int nid, 2815 const char *properties); 2816 int ssl_evp_md_up_ref(const EVP_MD *md); 2817 void ssl_evp_md_free(const EVP_MD *md); 2818 2819 int tls_provider_set_tls_params(SSL *s, EVP_CIPHER_CTX *ctx, 2820 const EVP_CIPHER *ciph, 2821 const EVP_MD *md); 2822 2823 void tls_engine_finish(ENGINE *e); 2824 const EVP_CIPHER *tls_get_cipher_from_engine(int nid); 2825 const EVP_MD *tls_get_digest_from_engine(int nid); 2826 int tls_engine_load_ssl_client_cert(SSL *s, X509 **px509, EVP_PKEY **ppkey); 2827 int ssl_hmac_old_new(SSL_HMAC *ret); 2828 void ssl_hmac_old_free(SSL_HMAC *ctx); 2829 int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md); 2830 int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len); 2831 int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len); 2832 size_t ssl_hmac_old_size(const SSL_HMAC *ctx); 2833 2834 int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx); 2835 int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx); 2836 int ssl_srp_ctx_free_intern(SSL *s); 2837 int ssl_srp_ctx_init_intern(SSL *s); 2838 2839 int ssl_srp_calc_a_param_intern(SSL *s); 2840 int ssl_srp_server_param_with_username_intern(SSL *s, int *ad); 2841 2842 void ssl_session_calculate_timeout(SSL_SESSION* ss); 2843 2844 # else /* OPENSSL_UNIT_TEST */ 2845 2846 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer 2847 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers 2848 2849 # endif 2850 #endif 2851