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846e33c7 1/*
9d75dce3 2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
61ae935a 3 *
2c18d164 4 * Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7
RS		 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
61ae935a
MC		 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
ef6c191b 21#define END_OF_EARLY_DATA_MAX_LENGTH 0
61ae935a 22#define SERVER_HELLO_MAX_LENGTH 20000
3847d426 23#define HELLO_RETRY_REQUEST_MAX_LENGTH 20000
e46f2334 24#define ENCRYPTED_EXTENSIONS_MAX_LENGTH 20000
61ae935a
MC		 25#define SERVER_KEY_EXCH_MAX_LENGTH 102400
26#define SERVER_HELLO_DONE_MAX_LENGTH 0
e1c3de44 27#define KEY_UPDATE_MAX_LENGTH 1
61ae935a
MC		 28#define CCS_MAX_LENGTH 1
29/* Max should actually be 36 but we are generous */
30#define FINISHED_MAX_LENGTH 64
31
f7e393be
MC		 32/* Dummy message type */
33#define SSL3_MT_DUMMY -1
34
597c51bc
MC		 35extern const unsigned char hrrrandom[];
36
61ae935a 37/* Message processing return codes */
be3583fa 38typedef enum {
61ae935a
MC		 39 /* Something bad happened */
40 MSG_PROCESS_ERROR,
41 /* We've finished reading - swap to writing */
42 MSG_PROCESS_FINISHED_READING,
43 /*
44 * We've completed the main processing of this message but there is some
45 * post processing to be done.
46 */
47 MSG_PROCESS_CONTINUE_PROCESSING,
48 /* We've finished this message - read the next message */
49 MSG_PROCESS_CONTINUE_READING
be3583fa 50} MSG_PROCESS_RETURN;
61ae935a 51
a15c953f
MC		 52typedef int (*confunc_f) (SSL *s, WPACKET *pkt);
53
5d671101 54int ssl3_take_mac(SSL *s);
9e84a42d 55int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups,
aff9929b 56 size_t num_groups, int checkallow);
43054d3d
MC		 57int create_synthetic_message_hash(SSL *s, const unsigned char *hashval,
58 size_t hashlen, const unsigned char *hrr,
59 size_t hrrlen);
f63a17d6 60int parse_ca_names(SSL *s, PACKET *pkt);
98732979
MC		 61const STACK_OF(X509_NAME) *get_ca_names(SSL *s);
62int construct_ca_names(SSL *s, const STACK_OF(X509_NAME) *ca_sk, WPACKET *pkt);
f63a17d6 63size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs,
72ceb6a6 64 const void *param, size_t paramlen);
5d6cca05 65
61ae935a
MC		 66/*
67 * TLS/DTLS client state machine functions
68 */
8481f583
MC		 69int ossl_statem_client_read_transition(SSL *s, int mt);
70WRITE_TRAN ossl_statem_client_write_transition(SSL *s);
71WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst);
72WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst);
6392fb8e 73int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt,
a15c953f 74 confunc_f *confunc, int *mt);
eda75751 75size_t ossl_statem_client_max_message_size(SSL *s);
8481f583
MC		 76MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt);
77WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst);
61ae935a
MC		 78
79/*
80 * TLS/DTLS server state machine functions
81 */
8481f583
MC		 82int ossl_statem_server_read_transition(SSL *s, int mt);
83WRITE_TRAN ossl_statem_server_write_transition(SSL *s);
84WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst);
85WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst);
6392fb8e 86int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt,
a15c953f 87 confunc_f *confunc,int *mt);
eda75751 88size_t ossl_statem_server_max_message_size(SSL *s);
8481f583
MC		 89MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt);
90WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst);
61ae935a
MC		 91
92/* Functions for getting new message data */
93__owur int tls_get_message_header(SSL *s, int *mt);
eda75751
MC		 94__owur int tls_get_message_body(SSL *s, size_t *len);
95__owur int dtls_get_message(SSL *s, int *mt, size_t *len);
61ae935a
MC		 96
97/* Message construction and processing functions */
f63a17d6 98__owur int tls_process_initial_server_flight(SSL *s);
be3583fa
MC		 99__owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt);
100__owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt);
7cea05dc
MC		 101__owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
102__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
61ae935a 103
229185e6 104__owur int tls_construct_finished(SSL *s, WPACKET *pkt);
44c04a2e 105__owur int tls_construct_key_update(SSL *s, WPACKET *pkt);
e1c3de44 106__owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt);
2a8db717
MC		 107__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs,
108 int stop);
be3583fa 109__owur WORK_STATE dtls_wait_for_dry(SSL *s);
61ae935a
MC		 110
111/* some client-only functions */
7cea05dc 112__owur int tls_construct_client_hello(SSL *s, WPACKET *pkt);
be3583fa
MC		 113__owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt);
114__owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt);
115__owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt);
f63a17d6 116__owur int tls_process_cert_status_body(SSL *s, PACKET *pkt);
be3583fa
MC		 117__owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt);
118__owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt);
d8bc1399 119__owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt);
be3583fa 120__owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst);
7cea05dc 121__owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt);
61ae935a 122__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
7cea05dc 123__owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt);
61ae935a 124__owur int tls_client_key_exchange_post_work(SSL *s);
f63e4288 125__owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt);
7cea05dc 126__owur int tls_construct_cert_status(SSL *s, WPACKET *pkt);
a230b26e 127__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt);
be3583fa 128__owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt);
61ae935a 129__owur int ssl3_check_cert_and_algorithm(SSL *s);
a230b26e 130#ifndef OPENSSL_NO_NEXTPROTONEG
7cea05dc 131__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
a230b26e 132#endif
c7f47786 133__owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt);
be3583fa 134__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
ef6c191b 135__owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt);
61ae935a
MC		 136
137/* some server-only functions */
be3583fa
MC		 138__owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt);
139__owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst);
7cea05dc 140__owur int tls_construct_server_hello(SSL *s, WPACKET *pkt);
7cea05dc
MC		 141__owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt);
142__owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt);
143__owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt);
144__owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt);
145__owur int tls_construct_server_done(SSL *s, WPACKET *pkt);
be3583fa
MC		 146__owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt);
147__owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt);
148__owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst);
149__owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt);
a230b26e 150#ifndef OPENSSL_NO_NEXTPROTONEG
be3583fa 151__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
a230b26e 152#endif
7cea05dc 153__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);
ef6c191b 154MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt);
6b473aca 155
70af3d8e
MC		 156
157/* Extension processing */
158
355a0d10 159typedef enum ext_return_en {
b186a592
MC		 160 EXT_RETURN_FAIL,
161 EXT_RETURN_SENT,
162 EXT_RETURN_NOT_SENT
163} EXT_RETURN;
164
88050dd1
MC		 165__owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx,
166 RAW_EXTENSION *exts);
43ae5eed
MC		 167__owur int extension_is_relevant(SSL *s, unsigned int extctx,
168 unsigned int thisctx);
70af3d8e 169__owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
f63a17d6 170 RAW_EXTENSION **res, size_t *len, int init);
7d152a3c 171__owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context,
f63a17d6 172 RAW_EXTENSION *exts, X509 *x, size_t chainidx);
4b299b8e 173__owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts,
f63a17d6 174 X509 *x, size_t chainidx, int fin);
43ae5eed
MC		 175__owur int should_add_extension(SSL *s, unsigned int extctx,
176 unsigned int thisctx, int max_version);
4b299b8e 177__owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 178 X509 *x, size_t chainidx);
25670f3e 179
1053a6e2
MC		 180__owur int tls_psk_do_binder(SSL *s, const EVP_MD *md,
181 const unsigned char *msgstart,
182 size_t binderoffset, const unsigned char *binderin,
183 unsigned char *binderout,
3a7c56b2 184 SSL_SESSION *sess, int sign, int external);
1053a6e2 185
25670f3e 186/* Server Extension processing */
61138358 187int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 188 X509 *x, size_t chainidx);
61138358 189int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 190 X509 *x, size_t chainidx);
cf72c757 191int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 192 X509 *x, size_t chainidx);
25670f3e 193#ifndef OPENSSL_NO_SRP
61138358 194int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 195 size_t chainidx);
25670f3e 196#endif
0a87d0ac 197int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 198 X509 *x, size_t chainidx);
25670f3e 199#ifndef OPENSSL_NO_EC
61138358 200int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 201 X509 *x, size_t chainidx);
dbc6268f 202#endif
61138358 203int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 204 X509 *x, size_t chainidxl);
61138358 205int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 206 X509 *x, size_t chainidx);
c589c34e
BK		 207int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context,
208 X509 *x, size_t chainidx);
61138358 209int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 210 size_t chainidx);
ab83e314 211#ifndef OPENSSL_NO_OCSP
61138358 212int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 213 X509 *x, size_t chainidx);
ab83e314 214#endif
25670f3e 215#ifndef OPENSSL_NO_NEXTPROTONEG
61138358 216int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 217 size_t chainidx);
25670f3e 218#endif
61138358 219int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 220 size_t chainidx);
25670f3e 221#ifndef OPENSSL_NO_SRTP
61138358 222int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 223 size_t chainidx);
25670f3e 224#endif
61138358 225int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 226 size_t chainidx);
61138358 227int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 228 size_t chainidx);
43054d3d
MC		 229int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
230 size_t chainidx);
61138358 231int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 232 size_t chainidx);
61138358 233int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 234 X509 *x, size_t chainidx);
61138358 235int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 236 size_t chainidx);
9d75dce3
TS		 237int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context,
238 X509 *x, size_t chainidx);
7da160b0 239
b186a592
MC		 240EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt,
241 unsigned int context, X509 *x,
f63a17d6 242 size_t chainidx);
b186a592
MC		 243EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt,
244 unsigned int context, X509 *x,
f63a17d6 245 size_t chainidx);
b186a592
MC		 246EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt,
247 unsigned int context, X509 *x,
f63a17d6 248 size_t chainidx);
cf72c757
F		 249EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt,
250 unsigned int context, X509 *x,
f63a17d6 251 size_t chainidx);
ab83e314 252#ifndef OPENSSL_NO_EC
b186a592
MC		 253EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt,
254 unsigned int context, X509 *x,
f63a17d6 255 size_t chainidx);
ab83e314 256#endif
b186a592
MC		 257EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt,
258 unsigned int context, X509 *x,
f63a17d6 259 size_t chainidx);
b186a592
MC		 260EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
261 unsigned int context, X509 *x,
f63a17d6 262 size_t chainidx);
ab83e314 263#ifndef OPENSSL_NO_OCSP
b186a592
MC		 264EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
265 unsigned int context, X509 *x,
f63a17d6 266 size_t chainidx);
ab83e314
MC		 267#endif
268#ifndef OPENSSL_NO_NEXTPROTONEG
b186a592
MC		 269EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
270 unsigned int context, X509 *x,
f63a17d6 271 size_t chainidx);
ab83e314 272#endif
b186a592 273EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 274 X509 *x, size_t chainidx);
ab83e314 275#ifndef OPENSSL_NO_SRTP
b186a592 276EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 277 X509 *x, size_t chainidx);
ab83e314 278#endif
b186a592 279EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 280 X509 *x, size_t chainidx);
b186a592 281EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 282 X509 *x, size_t chainidx);
88050dd1
MC		 283EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt,
284 unsigned int context, X509 *x,
285 size_t chainidx);
b186a592
MC		 286EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt,
287 unsigned int context, X509 *x,
f63a17d6 288 size_t chainidx);
43054d3d
MC		 289EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context,
290 X509 *x, size_t chainidx);
7da160b0
MC		 291/*
292 * Not in public headers as this is not an official extension. Only used when
293 * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set.
294 */
295#define TLSEXT_TYPE_cryptopro_bug 0xfde8
b186a592
MC		 296EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt,
297 unsigned int context, X509 *x,
f63a17d6 298 size_t chainidx);
b186a592 299EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 300 X509 *x, size_t chainidx);
6dd083fd
MC		 301
302/* Client Extension processing */
b186a592 303EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 304 X509 *x, size_t chainidx);
b186a592 305EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 306 X509 *x, size_t chainidx);
cf72c757 307EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 308 X509 *x, size_t chainidx);
ab83e314 309#ifndef OPENSSL_NO_SRP
b186a592 310EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
f63a17d6 311 size_t chainidx);
ab83e314
MC		 312#endif
313#ifndef OPENSSL_NO_EC
b186a592
MC		 314EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt,
315 unsigned int context, X509 *x,
f63a17d6 316 size_t chainidx);
dbc6268f 317#endif
b186a592
MC		 318EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,
319 unsigned int context, X509 *x,
f63a17d6 320 size_t chainidx);
dbc6268f 321
b186a592
MC		 322EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt,
323 unsigned int context, X509 *x,
f63a17d6 324 size_t chainidx);
b186a592
MC		 325EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt,
326 unsigned int context, X509 *x,
f63a17d6 327 size_t chainidx);
b186a592
MC		 328EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt,
329 unsigned int context, X509 *x,
f63a17d6 330 size_t chainidx);
ab83e314 331#ifndef OPENSSL_NO_OCSP
b186a592
MC		 332EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt,
333 unsigned int context, X509 *x,
f63a17d6 334 size_t chainidx);
ab83e314
MC		 335#endif
336#ifndef OPENSSL_NO_NEXTPROTONEG
b186a592 337EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 338 X509 *x, size_t chainidx);
ab83e314 339#endif
b186a592 340EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 341 X509 *x, size_t chainidx);
ab83e314 342#ifndef OPENSSL_NO_SRTP
b186a592 343EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 344 X509 *x, size_t chainidx);
ab83e314 345#endif
b186a592 346EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 347 X509 *x, size_t chainidx);
ab83e314 348#ifndef OPENSSL_NO_CT
b186a592 349EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 350 X509 *x, size_t chainidx);
ab83e314 351#endif
b186a592 352EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 353 X509 *x, size_t chainidx);
b186a592
MC		 354EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt,
355 unsigned int context, X509 *x,
f63a17d6 356 size_t chainidx);
b186a592
MC		 357EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt,
358 unsigned int context, X509 *x,
f63a17d6 359 size_t chainidx);
b186a592
MC		 360EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt,
361 unsigned int context, X509 *x,
f63a17d6 362 size_t chainidx);
b186a592 363EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 364 X509 *x, size_t chainidx);
b186a592
MC		 365EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt,
366 unsigned int context, X509 *x,
f63a17d6 367 size_t chainidx);
b186a592 368EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context,
f63a17d6 369 X509 *x, size_t chainidx);
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TS		 370EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context,
371 X509 *x, size_t chainidx);
372
61138358 373int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 374 X509 *x, size_t chainidx);
61138358 375int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 376 X509 *x, size_t chainidx);
b2cc7f31 377int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 378 X509 *x, size_t chainidx);
cf72c757 379int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 380 X509 *x, size_t chainidx);
6dd083fd 381#ifndef OPENSSL_NO_EC
61138358 382int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 383 X509 *x, size_t chainidx);
6dd083fd 384#endif
61138358 385int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 386 X509 *x, size_t chainidx);
ab83e314 387#ifndef OPENSSL_NO_OCSP
61138358 388int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context,
f63a17d6 389 X509 *x, size_t chainidx);
ab83e314 390#endif
6dd083fd 391#ifndef OPENSSL_NO_CT
61138358 392int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 393 size_t chainidx);
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MC		 394#endif
395#ifndef OPENSSL_NO_NEXTPROTONEG
61138358 396int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 397 size_t chainidx);
6dd083fd 398#endif
61138358 399int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 400 size_t chainidx);
6dd083fd 401#ifndef OPENSSL_NO_SRTP
61138358 402int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 403 size_t chainidx);
6dd083fd 404#endif
61138358 405int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 406 size_t chainidx);
61138358 407int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 408 size_t chainidx);
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MC		 409int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context,
410 X509 *x, size_t chainidx);
61138358 411int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 412 size_t chainidx);
cfef5027 413int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 414 size_t chainidx);
61138358 415int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
f63a17d6 416 size_t chainidx);
630369d9 417
f63a17d6 418int tls_handle_alpn(SSL *s);
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TS		 419
420int tls13_save_handshake_digest_for_pha(SSL *s);
421int tls13_restore_handshake_digest_for_pha(SSL *s);
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