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