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/* $OpenBSD: tls13_tlsext.h,v 1.2 2019/01/17 02:55:48 beck Exp $ */
/*
* Copyright (c) 2016, 2017 Joel Sing <jsing@openbsd.org>
* Copyright (c) 2017 Doug Hogan <doug@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef HEADER_SSL_TLS13_TLSEXT_H
#define HEADER_SSL_TLS13_TLSEXT_H
/* RFC 8446 Section 4.2 */
#define TLS13_TLSEXT_MSG_CH 0x0001 /* ClientHello */
#define TLS13_TLSEXT_MSG_SH 0x0002 /* ServerHello */
#define TLS13_TLSEXT_MSG_EE 0x0004 /* EncryptedExtension */
#define TLS13_TLSEXT_MSG_CT 0x0008 /* Certificate */
#define TLS13_TLSEXT_MSG_CR 0x0010 /* CertificateRequest */
#define TLS13_TLSEXT_MSG_NST 0x0020 /* NewSessionTicket */
#define TLS13_TLSEXT_MSG_HRR 0x0030 /* HelloRetryRequest */
__BEGIN_HIDDEN_DECLS
int tls13_tlsext_alpn_clienthello_needs(SSL *s);
int tls13_tlsext_alpn_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_alpn_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_alpn_serverhello_needs(SSL *s);
int tls13_tlsext_alpn_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_alpn_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ri_clienthello_needs(SSL *s);
int tls13_tlsext_ri_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ri_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ri_serverhello_needs(SSL *s);
int tls13_tlsext_ri_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ri_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sigalgs_clienthello_needs(SSL *s);
int tls13_tlsext_sigalgs_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sigalgs_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sigalgs_serverhello_needs(SSL *s);
int tls13_tlsext_sigalgs_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sigalgs_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sni_clienthello_needs(SSL *s);
int tls13_tlsext_sni_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sni_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sni_serverhello_needs(SSL *s);
int tls13_tlsext_sni_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sni_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_supportedgroups_clienthello_needs(SSL *s);
int tls13_tlsext_supportedgroups_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_supportedgroups_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_supportedgroups_serverhello_needs(SSL *s);
int tls13_tlsext_supportedgroups_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_supportedgroups_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ecpf_clienthello_needs(SSL *s);
int tls13_tlsext_ecpf_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ecpf_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ecpf_serverhello_needs(SSL *s);
int tls13_tlsext_ecpf_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ecpf_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ocsp_clienthello_needs(SSL *s);
int tls13_tlsext_ocsp_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ocsp_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_ocsp_serverhello_needs(SSL *s);
int tls13_tlsext_ocsp_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_ocsp_serverhello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sessionticket_clienthello_needs(SSL *s);
int tls13_tlsext_sessionticket_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sessionticket_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_sessionticket_serverhello_needs(SSL *s);
int tls13_tlsext_sessionticket_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_sessionticket_serverhello_parse(SSL *s, CBS *cbs, int *alert);
#ifndef OPENSSL_NO_SRTP
int tls13_tlsext_srtp_clienthello_needs(SSL *s);
int tls13_tlsext_srtp_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_srtp_clienthello_parse(SSL *s, CBS *cbs, int *alert);
int tls13_tlsext_srtp_serverhello_needs(SSL *s);
int tls13_tlsext_srtp_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_srtp_serverhello_parse(SSL *s, CBS *cbs, int *alert);
#endif
int tls13_tlsext_clienthello_build(SSL *s, CBB *cbb);
int tls13_tlsext_clienthello_parse(SSL *s, CBS *cbs, int *alert, uint16_t msg);
int tls13_tlsext_serverhello_build(SSL *s, CBB *cbb);
int tls13_tlsext_serverhello_parse(SSL *s, CBS *cbs, int *alert, uint16_t msg);
__END_HIDDEN_DECLS
#endif
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