1 /* 2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 /***************************************************************************** 11 * * 12 * The following definitions are PRIVATE to the state machine. They should * 13 * NOT be used outside of the state machine. * 14 * * 15 *****************************************************************************/ 16 17 /* Max message length definitions */ 18 19 /* The spec allows for a longer length than this, but we limit it */ 20 #define HELLO_VERIFY_REQUEST_MAX_LENGTH 258 21 #define END_OF_EARLY_DATA_MAX_LENGTH 0 22 #define HELLO_RETRY_REQUEST_MAX_LENGTH 20000 23 #define ENCRYPTED_EXTENSIONS_MAX_LENGTH 20000 24 #define SESSION_TICKET_MAX_LENGTH_TLS13 131338 25 #define SESSION_TICKET_MAX_LENGTH_TLS12 65541 26 #define SERVER_KEY_EXCH_MAX_LENGTH 102400 27 #define SERVER_HELLO_DONE_MAX_LENGTH 0 28 #define KEY_UPDATE_MAX_LENGTH 1 29 #define CCS_MAX_LENGTH 1 30 31 /* Max ServerHello size permitted by RFC 8446 */ 32 #define SERVER_HELLO_MAX_LENGTH 65607 33 34 /* Max should actually be 36 but we are generous */ 35 #define FINISHED_MAX_LENGTH 64 36 37 /* Dummy message type */ 38 #define SSL3_MT_DUMMY -1 39 40 extern const unsigned char hrrrandom[]; 41 42 /* Message processing return codes */ 43 typedef enum { 44 /* Something bad happened */ 45 MSG_PROCESS_ERROR, 46 /* We've finished reading - swap to writing */ 47 MSG_PROCESS_FINISHED_READING, 48 /* 49 * We've completed the main processing of this message but there is some 50 * post processing to be done. 51 */ 52 MSG_PROCESS_CONTINUE_PROCESSING, 53 /* We've finished this message - read the next message */ 54 MSG_PROCESS_CONTINUE_READING 55 } MSG_PROCESS_RETURN; 56 57 typedef int (*confunc_f) (SSL *s, WPACKET *pkt); 58 59 int ssl3_take_mac(SSL *s); 60 int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups, 61 size_t num_groups, int checkallow); 62 int create_synthetic_message_hash(SSL *s, const unsigned char *hashval, 63 size_t hashlen, const unsigned char *hrr, 64 size_t hrrlen); 65 int parse_ca_names(SSL *s, PACKET *pkt); 66 const STACK_OF(X509_NAME) *get_ca_names(SSL *s); 67 int construct_ca_names(SSL *s, const STACK_OF(X509_NAME) *ca_sk, WPACKET *pkt); 68 size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs, 69 const void *param, size_t paramlen); 70 71 /* 72 * TLS/DTLS client state machine functions 73 */ 74 int ossl_statem_client_read_transition(SSL *s, int mt); 75 WRITE_TRAN ossl_statem_client_write_transition(SSL *s); 76 WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst); 77 WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst); 78 int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt, 79 confunc_f *confunc, int *mt); 80 size_t ossl_statem_client_max_message_size(SSL *s); 81 MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt); 82 WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst); 83 84 /* 85 * TLS/DTLS server state machine functions 86 */ 87 int ossl_statem_server_read_transition(SSL *s, int mt); 88 WRITE_TRAN ossl_statem_server_write_transition(SSL *s); 89 WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst); 90 WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst); 91 int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt, 92 confunc_f *confunc,int *mt); 93 size_t ossl_statem_server_max_message_size(SSL *s); 94 MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt); 95 WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst); 96 97 /* Functions for getting new message data */ 98 __owur int tls_get_message_header(SSL *s, int *mt); 99 __owur int tls_get_message_body(SSL *s, size_t *len); 100 __owur int dtls_get_message(SSL *s, int *mt); 101 __owur int dtls_get_message_body(SSL *s, size_t *len); 102 103 /* Message construction and processing functions */ 104 __owur int tls_process_initial_server_flight(SSL *s); 105 __owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt); 106 __owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt); 107 __owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt); 108 __owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt); 109 110 __owur int tls_construct_finished(SSL *s, WPACKET *pkt); 111 __owur int tls_construct_key_update(SSL *s, WPACKET *pkt); 112 __owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt); 113 __owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, 114 int stop); 115 __owur WORK_STATE dtls_wait_for_dry(SSL *s); 116 117 /* some client-only functions */ 118 __owur int tls_construct_client_hello(SSL *s, WPACKET *pkt); 119 __owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt); 120 __owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt); 121 __owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt); 122 __owur int tls_process_cert_status_body(SSL *s, PACKET *pkt); 123 __owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt); 124 __owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt); 125 __owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt); 126 __owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst); 127 __owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt); 128 __owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 129 __owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt); 130 __owur int tls_client_key_exchange_post_work(SSL *s); 131 __owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt); 132 __owur int tls_construct_cert_status(SSL *s, WPACKET *pkt); 133 __owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt); 134 __owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt); 135 __owur WORK_STATE tls_post_process_server_certificate(SSL *s, WORK_STATE wst); 136 __owur int ssl3_check_cert_and_algorithm(SSL *s); 137 #ifndef OPENSSL_NO_NEXTPROTONEG 138 __owur int tls_construct_next_proto(SSL *s, WPACKET *pkt); 139 #endif 140 __owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt); 141 __owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt); 142 __owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt); 143 144 /* some server-only functions */ 145 __owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt); 146 __owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst); 147 __owur int tls_construct_server_hello(SSL *s, WPACKET *pkt); 148 __owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt); 149 __owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt); 150 __owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt); 151 __owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt); 152 __owur int tls_construct_server_done(SSL *s, WPACKET *pkt); 153 __owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt); 154 __owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt); 155 __owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst); 156 __owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt); 157 #ifndef OPENSSL_NO_NEXTPROTONEG 158 __owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt); 159 #endif 160 __owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt); 161 MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt); 162 163 #ifndef OPENSSL_NO_GOST 164 /* These functions are used in GOST18 CKE, both for client and server */ 165 int ossl_gost18_cke_cipher_nid(const SSL *s); 166 int ossl_gost_ukm(const SSL *s, unsigned char *dgst_buf); 167 #endif 168 169 /* Extension processing */ 170 171 typedef enum ext_return_en { 172 EXT_RETURN_FAIL, 173 EXT_RETURN_SENT, 174 EXT_RETURN_NOT_SENT 175 } EXT_RETURN; 176 177 __owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx, 178 RAW_EXTENSION *exts); 179 __owur int extension_is_relevant(SSL *s, unsigned int extctx, 180 unsigned int thisctx); 181 __owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context, 182 RAW_EXTENSION **res, size_t *len, int init); 183 __owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context, 184 RAW_EXTENSION *exts, X509 *x, size_t chainidx); 185 __owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts, 186 X509 *x, size_t chainidx, int fin); 187 __owur int should_add_extension(SSL *s, unsigned int extctx, 188 unsigned int thisctx, int max_version); 189 __owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context, 190 X509 *x, size_t chainidx); 191 192 __owur int tls_psk_do_binder(SSL *s, const EVP_MD *md, 193 const unsigned char *msgstart, 194 size_t binderoffset, const unsigned char *binderin, 195 unsigned char *binderout, 196 SSL_SESSION *sess, int sign, int external); 197 198 /* Server Extension processing */ 199 int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context, 200 X509 *x, size_t chainidx); 201 int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context, 202 X509 *x, size_t chainidx); 203 int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context, 204 X509 *x, size_t chainidx); 205 #ifndef OPENSSL_NO_SRP 206 int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 207 size_t chainidx); 208 #endif 209 int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context, 210 X509 *x, size_t chainidx); 211 int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context, 212 X509 *x, size_t chainidx); 213 int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context, 214 X509 *x, size_t chainidxl); 215 int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context, 216 X509 *x, size_t chainidx); 217 int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context, 218 X509 *x, size_t chainidx); 219 int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 220 size_t chainidx); 221 #ifndef OPENSSL_NO_OCSP 222 int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context, 223 X509 *x, size_t chainidx); 224 #endif 225 #ifndef OPENSSL_NO_NEXTPROTONEG 226 int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 227 size_t chainidx); 228 #endif 229 int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 230 size_t chainidx); 231 #ifndef OPENSSL_NO_SRTP 232 int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 233 size_t chainidx); 234 #endif 235 int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 236 size_t chainidx); 237 int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 238 size_t chainidx); 239 int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 240 size_t chainidx); 241 int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 242 size_t chainidx); 243 int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context, 244 X509 *x, size_t chainidx); 245 int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 246 size_t chainidx); 247 int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context, 248 X509 *x, size_t chainidx); 249 250 EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt, 251 unsigned int context, X509 *x, 252 size_t chainidx); 253 EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt, 254 unsigned int context, X509 *x, 255 size_t chainidx); 256 EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt, 257 unsigned int context, X509 *x, 258 size_t chainidx); 259 EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt, 260 unsigned int context, X509 *x, 261 size_t chainidx); 262 EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt, 263 unsigned int context, X509 *x, 264 size_t chainidx); 265 EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt, 266 unsigned int context, X509 *x, 267 size_t chainidx); 268 EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt, 269 unsigned int context, X509 *x, 270 size_t chainidx); 271 #ifndef OPENSSL_NO_OCSP 272 EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt, 273 unsigned int context, X509 *x, 274 size_t chainidx); 275 #endif 276 #ifndef OPENSSL_NO_NEXTPROTONEG 277 EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt, 278 unsigned int context, X509 *x, 279 size_t chainidx); 280 #endif 281 EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context, 282 X509 *x, size_t chainidx); 283 #ifndef OPENSSL_NO_SRTP 284 EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context, 285 X509 *x, size_t chainidx); 286 #endif 287 EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context, 288 X509 *x, size_t chainidx); 289 EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context, 290 X509 *x, size_t chainidx); 291 EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt, 292 unsigned int context, X509 *x, 293 size_t chainidx); 294 EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt, 295 unsigned int context, X509 *x, 296 size_t chainidx); 297 EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context, 298 X509 *x, size_t chainidx); 299 /* 300 * Not in public headers as this is not an official extension. Only used when 301 * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set. 302 */ 303 #define TLSEXT_TYPE_cryptopro_bug 0xfde8 304 EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt, 305 unsigned int context, X509 *x, 306 size_t chainidx); 307 EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context, 308 X509 *x, size_t chainidx); 309 310 /* Client Extension processing */ 311 EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context, 312 X509 *x, size_t chainidx); 313 EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context, 314 X509 *x, size_t chainidx); 315 EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context, 316 X509 *x, size_t chainidx); 317 #ifndef OPENSSL_NO_SRP 318 EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x, 319 size_t chainidx); 320 #endif 321 EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt, 322 unsigned int context, X509 *x, 323 size_t chainidx); 324 EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt, 325 unsigned int context, X509 *x, 326 size_t chainidx); 327 328 EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt, 329 unsigned int context, X509 *x, 330 size_t chainidx); 331 EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt, 332 unsigned int context, X509 *x, 333 size_t chainidx); 334 EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt, 335 unsigned int context, X509 *x, 336 size_t chainidx); 337 #ifndef OPENSSL_NO_OCSP 338 EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt, 339 unsigned int context, X509 *x, 340 size_t chainidx); 341 #endif 342 #ifndef OPENSSL_NO_NEXTPROTONEG 343 EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context, 344 X509 *x, size_t chainidx); 345 #endif 346 EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context, 347 X509 *x, size_t chainidx); 348 #ifndef OPENSSL_NO_SRTP 349 EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context, 350 X509 *x, size_t chainidx); 351 #endif 352 EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context, 353 X509 *x, size_t chainidx); 354 #ifndef OPENSSL_NO_CT 355 EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context, 356 X509 *x, size_t chainidx); 357 #endif 358 EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context, 359 X509 *x, size_t chainidx); 360 EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt, 361 unsigned int context, X509 *x, 362 size_t chainidx); 363 EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt, 364 unsigned int context, X509 *x, 365 size_t chainidx); 366 EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt, 367 unsigned int context, X509 *x, 368 size_t chainidx); 369 EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context, 370 X509 *x, size_t chainidx); 371 EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt, 372 unsigned int context, X509 *x, 373 size_t chainidx); 374 EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context, 375 X509 *x, size_t chainidx); 376 EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context, 377 X509 *x, size_t chainidx); 378 379 int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context, 380 X509 *x, size_t chainidx); 381 int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context, 382 X509 *x, size_t chainidx); 383 int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context, 384 X509 *x, size_t chainidx); 385 int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context, 386 X509 *x, size_t chainidx); 387 int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context, 388 X509 *x, size_t chainidx); 389 int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context, 390 X509 *x, size_t chainidx); 391 #ifndef OPENSSL_NO_OCSP 392 int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context, 393 X509 *x, size_t chainidx); 394 #endif 395 #ifndef OPENSSL_NO_CT 396 int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 397 size_t chainidx); 398 #endif 399 #ifndef OPENSSL_NO_NEXTPROTONEG 400 int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 401 size_t chainidx); 402 #endif 403 int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 404 size_t chainidx); 405 #ifndef OPENSSL_NO_SRTP 406 int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 407 size_t chainidx); 408 #endif 409 int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 410 size_t chainidx); 411 int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 412 size_t chainidx); 413 int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context, 414 X509 *x, size_t chainidx); 415 int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 416 size_t chainidx); 417 int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 418 size_t chainidx); 419 int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 420 size_t chainidx); 421 422 int tls_handle_alpn(SSL *s); 423 424 int tls13_save_handshake_digest_for_pha(SSL *s); 425 int tls13_restore_handshake_digest_for_pha(SSL *s); 426