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/* IKEv2 notify routines, for Libreswan
*
* Copyright (C) 2020 Andrew Cagney <cagney@gnu.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef IKEV2_NOTIFY_H
#define IKEV2_NOTIFY_H
#include <stdbool.h>
struct msg_digest;
struct ike_sa;
struct logger;
struct payload_digest;
struct pbs_out;
enum payload_security;
/*
* Construct IKEv2 notification payloads.
*/
/*
* Emit an SA Notification header (could be 0/none), and then open the
* sub_payload.
*/
bool open_v2N_SA_output_pbs(struct pbs_out *outs,
v2_notification_t ntype,
enum ikev2_sec_proto_id protoid,
const ipsec_spi_t *spi, /* optional */
struct pbs_out *sub_payload);
/*
* Emit a non-SA v2 Notification payload header and then open the
* sub-payload.
*/
bool open_v2N_output_pbs(struct pbs_out *outs,
v2_notification_t ntype,
struct pbs_out *sub_payload);
/*
* Emit a v2 Notification payload, with optional hunk as sub-payload.
*/
bool emit_v2N_bytes(v2_notification_t ntype,
const void *bytes, size_t size,
struct pbs_out *outs);
#define emit_v2N_hunk(NTYPE, HUNK, OUTS) emit_v2N_bytes(NTYPE, (HUNK).ptr, (HUNK).len, OUTS)
/* output an empty v2 notification payload */
bool emit_v2N(v2_notification_t ntype, struct pbs_out *outs);
void decode_v2N_payload(struct logger *logger, struct msg_digest *md,
const struct payload_digest *notify);
enum v2_pd v2_pd_from_notification(v2_notification_t);
void record_v2N_response(struct logger *logger,
struct ike_sa *ike,
struct msg_digest *md,
v2_notification_t type,
shunk_t data/*optional*/,
enum payload_security security);
void record_v2N_spi_response(struct logger *logger,
struct ike_sa *st,
struct msg_digest *md,
enum ikev2_sec_proto_id protoid,
ipsec_spi_t *spi,
v2_notification_t type,
shunk_t data /*optional*/,
enum payload_security security);
void send_v2N_response_from_md(struct msg_digest *md,
v2_notification_t type,
const shunk_t *data,
const char *format, ...) PRINTF_LIKE(4);
#endif
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