1/* 2 * Copyright 2015-2022 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/* Invalid extension ID for non-supported extensions */ 41#define TLSEXT_TYPE_invalid 0x10000 42#define TLSEXT_TYPE_out_of_range 0x10001 43unsigned int ossl_get_extension_type(size_t idx); 44 45extern const unsigned char hrrrandom[]; 46 47/* Message processing return codes */ 48typedef enum { 49 /* Something bad happened */ 50 MSG_PROCESS_ERROR, 51 /* We've finished reading - swap to writing */ 52 MSG_PROCESS_FINISHED_READING, 53 /* 54 * We've completed the main processing of this message but there is some 55 * post processing to be done. 56 */ 57 MSG_PROCESS_CONTINUE_PROCESSING, 58 /* We've finished this message - read the next message */ 59 MSG_PROCESS_CONTINUE_READING 60} MSG_PROCESS_RETURN; 61 62typedef int (*confunc_f) (SSL *s, WPACKET *pkt); 63 64int ssl3_take_mac(SSL *s); 65int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups, 66 size_t num_groups, int checkallow); 67int create_synthetic_message_hash(SSL *s, const unsigned char *hashval, 68 size_t hashlen, const unsigned char *hrr, 69 size_t hrrlen); 70int parse_ca_names(SSL *s, PACKET *pkt); 71const STACK_OF(X509_NAME) *get_ca_names(SSL *s); 72int construct_ca_names(SSL *s, const STACK_OF(X509_NAME) *ca_sk, WPACKET *pkt); 73size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs, 74 const void *param, size_t paramlen); 75 76/* 77 * TLS/DTLS client state machine functions 78 */ 79int ossl_statem_client_read_transition(SSL *s, int mt); 80WRITE_TRAN ossl_statem_client_write_transition(SSL *s); 81WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst); 82WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst); 83int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt, 84 confunc_f *confunc, int *mt); 85size_t ossl_statem_client_max_message_size(SSL *s); 86MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt); 87WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst); 88 89/* 90 * TLS/DTLS server state machine functions 91 */ 92int ossl_statem_server_read_transition(SSL *s, int mt); 93WRITE_TRAN ossl_statem_server_write_transition(SSL *s); 94WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst); 95WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst); 96int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt, 97 confunc_f *confunc,int *mt); 98size_t ossl_statem_server_max_message_size(SSL *s); 99MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt); 100WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst); 101 102/* Functions for getting new message data */ 103__owur int tls_get_message_header(SSL *s, int *mt); 104__owur int tls_get_message_body(SSL *s, size_t *len); 105__owur int dtls_get_message(SSL *s, int *mt); 106__owur int dtls_get_message_body(SSL *s, size_t *len); 107 108/* Message construction and processing functions */ 109__owur int tls_process_initial_server_flight(SSL *s); 110__owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt); 111__owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt); 112__owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt); 113__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt); 114 115__owur int tls_construct_finished(SSL *s, WPACKET *pkt); 116__owur int tls_construct_key_update(SSL *s, WPACKET *pkt); 117__owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt); 118__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, 119 int stop); 120__owur WORK_STATE dtls_wait_for_dry(SSL *s); 121 122/* some client-only functions */ 123__owur int tls_construct_client_hello(SSL *s, WPACKET *pkt); 124__owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt); 125__owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt); 126__owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt); 127__owur int tls_process_cert_status_body(SSL *s, PACKET *pkt); 128__owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt); 129__owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt); 130__owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt); 131__owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst); 132__owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt); 133__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 134__owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt); 135__owur int tls_client_key_exchange_post_work(SSL *s); 136__owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt); 137__owur int tls_construct_cert_status(SSL *s, WPACKET *pkt); 138__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt); 139__owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt); 140__owur WORK_STATE tls_post_process_server_certificate(SSL *s, WORK_STATE wst); 141__owur int ssl3_check_cert_and_algorithm(SSL *s); 142#ifndef OPENSSL_NO_NEXTPROTONEG 143__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt); 144#endif 145__owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt); 146__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt); 147__owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt); 148 149/* some server-only functions */ 150__owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt); 151__owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst); 152__owur int tls_construct_server_hello(SSL *s, WPACKET *pkt); 153__owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt); 154__owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt); 155__owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt); 156__owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt); 157__owur int tls_construct_server_done(SSL *s, WPACKET *pkt); 158__owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt); 159__owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt); 160__owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst); 161__owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt); 162#ifndef OPENSSL_NO_NEXTPROTONEG 163__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt); 164#endif 165__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt); 166MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt); 167 168#ifndef OPENSSL_NO_GOST 169/* These functions are used in GOST18 CKE, both for client and server */ 170int ossl_gost18_cke_cipher_nid(const SSL *s); 171int ossl_gost_ukm(const SSL *s, unsigned char *dgst_buf); 172#endif 173 174/* Extension processing */ 175 176typedef enum ext_return_en { 177 EXT_RETURN_FAIL, 178 EXT_RETURN_SENT, 179 EXT_RETURN_NOT_SENT 180} EXT_RETURN; 181 182__owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx, 183 RAW_EXTENSION *exts); 184__owur int extension_is_relevant(SSL *s, unsigned int extctx, 185 unsigned int thisctx); 186__owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context, 187 RAW_EXTENSION **res, size_t *len, int init); 188__owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context, 189 RAW_EXTENSION *exts, X509 *x, size_t chainidx); 190__owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts, 191 X509 *x, size_t chainidx, int fin); 192__owur int should_add_extension(SSL *s, unsigned int extctx, 193 unsigned int thisctx, int max_version); 194__owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context, 195 X509 *x, size_t chainidx); 196 197__owur int tls_psk_do_binder(SSL *s, const EVP_MD *md, 198 const unsigned char *msgstart, 199 size_t binderoffset, const unsigned char *binderin, 200 unsigned char *binderout, 201 SSL_SESSION *sess, int sign, int external); 202 203/* Server Extension processing */ 204int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context, 205 X509 *x, size_t chainidx); 206int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context, 207 X509 *x, size_t chainidx); 208int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context, 209 X509 *x, size_t chainidx); 210#ifndef OPENSSL_NO_SRP 211int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 212 size_t chainidx); 213#endif 214int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context, 215 X509 *x, size_t chainidx); 216int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context, 217 X509 *x, size_t chainidx); 218int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context, 219 X509 *x, size_t chainidxl); 220int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context, 221 X509 *x, size_t chainidx); 222int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context, 223 X509 *x, size_t chainidx); 224int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 225 size_t chainidx); 226#ifndef OPENSSL_NO_OCSP 227int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context, 228 X509 *x, size_t chainidx); 229#endif 230#ifndef OPENSSL_NO_NEXTPROTONEG 231int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 232 size_t chainidx); 233#endif 234int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 235 size_t chainidx); 236#ifndef OPENSSL_NO_SRTP 237int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 238 size_t chainidx); 239#endif 240int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 241 size_t chainidx); 242int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 243 size_t chainidx); 244int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 245 size_t chainidx); 246int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 247 size_t chainidx); 248int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context, 249 X509 *x, size_t chainidx); 250int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 251 size_t chainidx); 252int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context, 253 X509 *x, size_t chainidx); 254 255EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt, 256 unsigned int context, X509 *x, 257 size_t chainidx); 258EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt, 259 unsigned int context, X509 *x, 260 size_t chainidx); 261EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt, 262 unsigned int context, X509 *x, 263 size_t chainidx); 264EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt, 265 unsigned int context, X509 *x, 266 size_t chainidx); 267EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt, 268 unsigned int context, X509 *x, 269 size_t chainidx); 270EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt, 271 unsigned int context, X509 *x, 272 size_t chainidx); 273EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt, 274 unsigned int context, X509 *x, 275 size_t chainidx); 276#ifndef OPENSSL_NO_OCSP 277EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt, 278 unsigned int context, X509 *x, 279 size_t chainidx); 280#endif 281#ifndef OPENSSL_NO_NEXTPROTONEG 282EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt, 283 unsigned int context, X509 *x, 284 size_t chainidx); 285#endif 286EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context, 287 X509 *x, size_t chainidx); 288#ifndef OPENSSL_NO_SRTP 289EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context, 290 X509 *x, size_t chainidx); 291#endif 292EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context, 293 X509 *x, size_t chainidx); 294EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context, 295 X509 *x, size_t chainidx); 296EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt, 297 unsigned int context, X509 *x, 298 size_t chainidx); 299EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt, 300 unsigned int context, X509 *x, 301 size_t chainidx); 302EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context, 303 X509 *x, size_t chainidx); 304/* 305 * Not in public headers as this is not an official extension. Only used when 306 * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set. 307 */ 308#define TLSEXT_TYPE_cryptopro_bug 0xfde8 309EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt, 310 unsigned int context, X509 *x, 311 size_t chainidx); 312EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context, 313 X509 *x, size_t chainidx); 314 315/* Client Extension processing */ 316EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context, 317 X509 *x, size_t chainidx); 318EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context, 319 X509 *x, size_t chainidx); 320EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context, 321 X509 *x, size_t chainidx); 322#ifndef OPENSSL_NO_SRP 323EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x, 324 size_t chainidx); 325#endif 326EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt, 327 unsigned int context, X509 *x, 328 size_t chainidx); 329EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt, 330 unsigned int context, X509 *x, 331 size_t chainidx); 332 333EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt, 334 unsigned int context, X509 *x, 335 size_t chainidx); 336EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt, 337 unsigned int context, X509 *x, 338 size_t chainidx); 339EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt, 340 unsigned int context, X509 *x, 341 size_t chainidx); 342#ifndef OPENSSL_NO_OCSP 343EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt, 344 unsigned int context, X509 *x, 345 size_t chainidx); 346#endif 347#ifndef OPENSSL_NO_NEXTPROTONEG 348EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context, 349 X509 *x, size_t chainidx); 350#endif 351EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context, 352 X509 *x, size_t chainidx); 353#ifndef OPENSSL_NO_SRTP 354EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context, 355 X509 *x, size_t chainidx); 356#endif 357EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context, 358 X509 *x, size_t chainidx); 359#ifndef OPENSSL_NO_CT 360EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context, 361 X509 *x, size_t chainidx); 362#endif 363EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context, 364 X509 *x, size_t chainidx); 365EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt, 366 unsigned int context, X509 *x, 367 size_t chainidx); 368EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt, 369 unsigned int context, X509 *x, 370 size_t chainidx); 371EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt, 372 unsigned int context, X509 *x, 373 size_t chainidx); 374EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context, 375 X509 *x, size_t chainidx); 376EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt, 377 unsigned int context, X509 *x, 378 size_t chainidx); 379EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context, 380 X509 *x, size_t chainidx); 381EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context, 382 X509 *x, size_t chainidx); 383 384int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context, 385 X509 *x, size_t chainidx); 386int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context, 387 X509 *x, size_t chainidx); 388int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context, 389 X509 *x, size_t chainidx); 390int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context, 391 X509 *x, size_t chainidx); 392int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context, 393 X509 *x, size_t chainidx); 394int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context, 395 X509 *x, size_t chainidx); 396#ifndef OPENSSL_NO_OCSP 397int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context, 398 X509 *x, size_t chainidx); 399#endif 400#ifndef OPENSSL_NO_CT 401int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 402 size_t chainidx); 403#endif 404#ifndef OPENSSL_NO_NEXTPROTONEG 405int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 406 size_t chainidx); 407#endif 408int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 409 size_t chainidx); 410#ifndef OPENSSL_NO_SRTP 411int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 412 size_t chainidx); 413#endif 414int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 415 size_t chainidx); 416int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 417 size_t chainidx); 418int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context, 419 X509 *x, size_t chainidx); 420int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 421 size_t chainidx); 422int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 423 size_t chainidx); 424int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x, 425 size_t chainidx); 426 427int tls_handle_alpn(SSL *s); 428 429int tls13_save_handshake_digest_for_pha(SSL *s); 430int tls13_restore_handshake_digest_for_pha(SSL *s); 431