ssl/statem/statem_local.h

   1 /*
   2  * Copyright 2015-2020 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 SERVER_KEY_EXCH_MAX_LENGTH      102400
  25 #define SERVER_HELLO_DONE_MAX_LENGTH    0
  26 #define KEY_UPDATE_MAX_LENGTH           1
  27 #define CCS_MAX_LENGTH                  1
  28
  29 /* Max ServerHello size permitted by RFC 8446 */
  30 #define SERVER_HELLO_MAX_LENGTH         65607
  31
  32 /* Max should actually be 36 but we are generous */
  33 #define FINISHED_MAX_LENGTH             64
  34
  35 /* Dummy message type */
  36 #define SSL3_MT_DUMMY   -1
  37
  38 extern const unsigned char hrrrandom[];
  39
  40 /* Message processing return codes */
  41 typedef enum {
  42     /* Something bad happened */
  43     MSG_PROCESS_ERROR,
  44     /* We've finished reading - swap to writing */
  45     MSG_PROCESS_FINISHED_READING,
  46     /*
  47      * We've completed the main processing of this message but there is some
  48      * post processing to be done.
  49      */
  50     MSG_PROCESS_CONTINUE_PROCESSING,
  51     /* We've finished this message - read the next message */
  52     MSG_PROCESS_CONTINUE_READING
  53 } MSG_PROCESS_RETURN;
  54
  55 typedef int (*confunc_f) (SSL *s, WPACKET *pkt);
  56
  57 int ssl3_take_mac(SSL *s);
  58 int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups,
  59                   size_t num_groups, int checkallow);
  60 int create_synthetic_message_hash(SSL *s, const unsigned char *hashval,
  61                                   size_t hashlen, const unsigned char *hrr,
  62                                   size_t hrrlen);
  63 int parse_ca_names(SSL *s, PACKET *pkt);
  64 const STACK_OF(X509_NAME) *get_ca_names(SSL *s);
  65 int construct_ca_names(SSL *s, const STACK_OF(X509_NAME) *ca_sk, WPACKET *pkt);
  66 size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs,
  67                                   const void *param, size_t paramlen);
  68
  69 /*
  70  * TLS/DTLS client state machine functions
  71  */
  72 int ossl_statem_client_read_transition(SSL *s, int mt);
  73 WRITE_TRAN ossl_statem_client_write_transition(SSL *s);
  74 WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst);
  75 WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst);
  76 int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt,
  77                                          confunc_f *confunc, int *mt);
  78 size_t ossl_statem_client_max_message_size(SSL *s);
  79 MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt);
  80 WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst);
  81
  82 /*
  83  * TLS/DTLS server state machine functions
  84  */
  85 int ossl_statem_server_read_transition(SSL *s, int mt);
  86 WRITE_TRAN ossl_statem_server_write_transition(SSL *s);
  87 WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst);
  88 WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst);
  89 int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt,
  90                                          confunc_f *confunc,int *mt);
  91 size_t ossl_statem_server_max_message_size(SSL *s);
  92 MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt);
  93 WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst);
  94
  95 /* Functions for getting new message data */
  96 __owur int tls_get_message_header(SSL *s, int *mt);
  97 __owur int tls_get_message_body(SSL *s, size_t *len);
  98 __owur int dtls_get_message(SSL *s, int *mt, size_t *len);
  99
 100 /* Message construction and processing functions */
 101 __owur int tls_process_initial_server_flight(SSL *s);
 102 __owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt);
 103 __owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt);
 104 __owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
 105 __owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
 106
 107 __owur int tls_construct_finished(SSL *s, WPACKET *pkt);
 108 __owur int tls_construct_key_update(SSL *s, WPACKET *pkt);
 109 __owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt);
 110 __owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs,
 111                                        int stop);
 112 __owur WORK_STATE dtls_wait_for_dry(SSL *s);
 113
 114 /* some client-only functions */
 115 __owur int tls_construct_client_hello(SSL *s, WPACKET *pkt);
 116 __owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt);
 117 __owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt);
 118 __owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt);
 119 __owur int tls_process_cert_status_body(SSL *s, PACKET *pkt);
 120 __owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt);
 121 __owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt);
 122 __owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt);
 123 __owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst);
 124 __owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt);
 125 __owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
 126 __owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt);
 127 __owur int tls_client_key_exchange_post_work(SSL *s);
 128 __owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt);
 129 __owur int tls_construct_cert_status(SSL *s, WPACKET *pkt);
 130 __owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt);
 131 __owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt);
 132 __owur WORK_STATE tls_post_process_server_certificate(SSL *s, WORK_STATE wst);
 133 __owur int ssl3_check_cert_and_algorithm(SSL *s);
 134 #ifndef OPENSSL_NO_NEXTPROTONEG
 135 __owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
 136 #endif
 137 __owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt);
 138 __owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
 139 __owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt);
 140
 141 /* some server-only functions */
 142 __owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt);
 143 __owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst);
 144 __owur int tls_construct_server_hello(SSL *s, WPACKET *pkt);
 145 __owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt);
 146 __owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt);
 147 __owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt);
 148 __owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt);
 149 __owur int tls_construct_server_done(SSL *s, WPACKET *pkt);
 150 __owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt);
 151 __owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt);
 152 __owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst);
 153 __owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt);
 154 #ifndef OPENSSL_NO_NEXTPROTONEG
 155 __owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
 156 #endif
 157 __owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);
 158 MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt);
 159
 160 #ifndef OPENSSL_NO_GOST
 161 /* These functions are used in GOST18 CKE, both for client and server */
 162 int gost18_cke_cipher_nid(const SSL *s);
 163 int gost_ukm(const SSL *s, unsigned char *dgst_buf);
 164 #endif
 165
 166 /* Extension processing */
 167
 168 typedef enum ext_return_en {
 169     EXT_RETURN_FAIL,
 170     EXT_RETURN_SENT,
 171     EXT_RETURN_NOT_SENT
 172 } EXT_RETURN;
 173
 174 __owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx,
 175                                      RAW_EXTENSION *exts);
 176 __owur int extension_is_relevant(SSL *s, unsigned int extctx,
 177                                  unsigned int thisctx);
 178 __owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
 179                                   RAW_EXTENSION **res, size_t *len, int init);
 180 __owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context,
 181                                RAW_EXTENSION *exts,  X509 *x, size_t chainidx);
 182 __owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts,
 183                                     X509 *x, size_t chainidx, int fin);
 184 __owur int should_add_extension(SSL *s, unsigned int extctx,
 185                                 unsigned int thisctx, int max_version);
 186 __owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
 187                                     X509 *x, size_t chainidx);
 188
 189 __owur int tls_psk_do_binder(SSL *s, const EVP_MD *md,
 190                              const unsigned char *msgstart,
 191                              size_t binderoffset, const unsigned char *binderin,
 192                              unsigned char *binderout,
 193                              SSL_SESSION *sess, int sign, int external);
 194
 195 /* Server Extension processing */
 196 int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
 197                                X509 *x, size_t chainidx);
 198 int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
 199                                X509 *x, size_t chainidx);
 200 int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
 201                                   X509 *x, size_t chainidx);
 202 #ifndef OPENSSL_NO_SRP
 203 int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 204                        size_t chainidx);
 205 #endif
 206 int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context,
 207                               X509 *x, size_t chainidx);
 208 #ifndef OPENSSL_NO_EC
 209 int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
 210                                  X509 *x, size_t chainidx);
 211 #endif
 212 int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
 213                                     X509 *x, size_t chainidxl);
 214 int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
 215                                   X509 *x, size_t chainidx);
 216 int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context,
 217                                  X509 *x, size_t chainidx);
 218 int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 219                             size_t chainidx);
 220 #ifndef OPENSSL_NO_OCSP
 221 int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
 222                                   X509 *x, size_t chainidx);
 223 #endif
 224 #ifndef OPENSSL_NO_NEXTPROTONEG
 225 int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 226                        size_t chainidx);
 227 #endif
 228 int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 229                         size_t chainidx);
 230 #ifndef OPENSSL_NO_SRTP
 231 int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 232                             size_t chainidx);
 233 #endif
 234 int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 235                        size_t chainidx);
 236 int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 237                              size_t chainidx);
 238 int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 239                           size_t chainidx);
 240 int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 241                        size_t chainidx);
 242 int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
 243                                  X509 *x, size_t chainidx);
 244 int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 245                        size_t chainidx);
 246 int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context,
 247                                        X509 *x, size_t chainidx);
 248
 249 EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt,
 250                                           unsigned int context, X509 *x,
 251                                           size_t chainidx);
 252 EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt,
 253                                           unsigned int context, X509 *x,
 254                                           size_t chainidx);
 255 EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt,
 256                                          unsigned int context, X509 *x,
 257                                          size_t chainidx);
 258 EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt,
 259                                              unsigned int context, X509 *x,
 260                                              size_t chainidx);
 261 #ifndef OPENSSL_NO_EC
 262 EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt,
 263                                             unsigned int context, X509 *x,
 264                                             size_t chainidx);
 265 #endif
 266 EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt,
 267                                                unsigned int context, X509 *x,
 268                                                size_t chainidx);
 269 EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
 270                                              unsigned int context, X509 *x,
 271                                              size_t chainidx);
 272 #ifndef OPENSSL_NO_OCSP
 273 EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
 274                                              unsigned int context, X509 *x,
 275                                              size_t chainidx);
 276 #endif
 277 #ifndef OPENSSL_NO_NEXTPROTONEG
 278 EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
 279                                              unsigned int context, X509 *x,
 280                                              size_t chainidx);
 281 #endif
 282 EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context,
 283                                    X509 *x, size_t chainidx);
 284 #ifndef OPENSSL_NO_SRTP
 285 EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
 286                                 X509 *x, size_t chainidx);
 287 #endif
 288 EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context,
 289                                   X509 *x, size_t chainidx);
 290 EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
 291                                   X509 *x, size_t chainidx);
 292 EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt,
 293                                                  unsigned int context, X509 *x,
 294                                                  size_t chainidx);
 295 EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt,
 296                                         unsigned int context, X509 *x,
 297                                         size_t chainidx);
 298 EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context,
 299                                      X509 *x, size_t chainidx);
 300 /*
 301  * Not in public headers as this is not an official extension. Only used when
 302  * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set.
 303  */
 304 #define TLSEXT_TYPE_cryptopro_bug      0xfde8
 305 EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt,
 306                                             unsigned int context, X509 *x,
 307                                             size_t chainidx);
 308 EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context,
 309                                   X509 *x, size_t chainidx);
 310
 311 /* Client Extension processing */
 312 EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
 313                                    X509 *x, size_t chainidx);
 314 EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context,
 315                                    X509 *x, size_t chainidx);
 316 EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context,
 317                                              X509 *x, size_t chainidx);
 318 #ifndef OPENSSL_NO_SRP
 319 EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
 320                            size_t chainidx);
 321 #endif
 322 #ifndef OPENSSL_NO_EC
 323 EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt,
 324                                             unsigned int context, X509 *x,
 325                                             size_t chainidx);
 326 #endif
 327 EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,
 328                                                unsigned int context, X509 *x,
 329                                                size_t chainidx);
 330
 331 EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt,
 332                                          unsigned int context, X509 *x,
 333                                          size_t chainidx);
 334 EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt,
 335                                              unsigned int context, X509 *x,
 336                                              size_t chainidx);
 337 EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt,
 338                                        unsigned int context, X509 *x,
 339                                        size_t chainidx);
 340 #ifndef OPENSSL_NO_OCSP
 341 EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt,
 342                                              unsigned int context, X509 *x,
 343                                              size_t chainidx);
 344 #endif
 345 #ifndef OPENSSL_NO_NEXTPROTONEG
 346 EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context,
 347                                   X509 *x, size_t chainidx);
 348 #endif
 349 EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context,
 350                                    X509 *x, size_t chainidx);
 351 #ifndef OPENSSL_NO_SRTP
 352 EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
 353                                        X509 *x, size_t chainidx);
 354 #endif
 355 EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context,
 356                                   X509 *x, size_t chainidx);
 357 #ifndef OPENSSL_NO_CT
 358 EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context,
 359                                   X509 *x, size_t chainidx);
 360 #endif
 361 EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context,
 362                                   X509 *x, size_t chainidx);
 363 EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt,
 364                                                  unsigned int context, X509 *x,
 365                                                  size_t chainidx);
 366 EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt,
 367                                         unsigned int context, X509 *x,
 368                                         size_t chainidx);
 369 EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt,
 370                                             unsigned int context, X509 *x,
 371                                             size_t chainidx);
 372 EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context,
 373                                      X509 *x, size_t chainidx);
 374 EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt,
 375                                       unsigned int context, X509 *x,
 376                                       size_t chainidx);
 377 EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context,
 378                                   X509 *x, size_t chainidx);
 379 EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context,
 380                                                   X509 *x, size_t chainidx);
 381
 382 int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
 383                                X509 *x, size_t chainidx);
 384 int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context,
 385                                X509 *x, size_t chainidx);
 386 int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context,
 387                               X509 *x, size_t chainidx);
 388 int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
 389                                   X509 *x, size_t chainidx);
 390 #ifndef OPENSSL_NO_EC
 391 int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
 392                                  X509 *x, size_t chainidx);
 393 #endif
 394 int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
 395                                   X509 *x, size_t chainidx);
 396 #ifndef OPENSSL_NO_OCSP
 397 int 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
 401 int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 402                        size_t chainidx);
 403 #endif
 404 #ifndef OPENSSL_NO_NEXTPROTONEG
 405 int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 406                        size_t chainidx);
 407 #endif
 408 int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 409                         size_t chainidx);
 410 #ifndef OPENSSL_NO_SRTP
 411 int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 412                             size_t chainidx);
 413 #endif
 414 int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 415                        size_t chainidx);
 416 int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 417                        size_t chainidx);
 418 int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context,
 419                                       X509 *x, size_t chainidx);
 420 int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 421                              size_t chainidx);
 422 int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 423                        size_t chainidx);
 424 int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
 425                        size_t chainidx);
 426
 427 int tls_handle_alpn(SSL *s);
 428
 429 int tls13_save_handshake_digest_for_pha(SSL *s);
 430 int tls13_restore_handshake_digest_for_pha(SSL *s);