/*      $NetBSD: isakmp_var.h,v 1.20 2025/03/08 16:39:08 christos Exp $ */

/* Id: isakmp_var.h,v 1.12 2005/05/07 14:45:31 manubsd Exp */

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _ISAKMP_VAR_H
#define _ISAKMP_VAR_H

#include "vmbuf.h"
#include "policy.h"

#define PORT_ISAKMP 500
#define PORT_ISAKMP_NATT 4500

#define DEFAULT_NONCE_SIZE      16

typedef u_char cookie_t[8];
typedef u_char msgid_t[4];

typedef struct { /* i_cookie + r_cookie */
        cookie_t i_ck;
        cookie_t r_ck;
} isakmp_index;

struct isakmp_gen;
struct sched;

struct sockaddr;
struct ph1handle;
struct ph2handle;
struct remoteconf;
struct ipsecdoi_pl_id;  /* XXX */
struct isakmp_pl_ke;    /* XXX */
struct isakmp_pl_nonce; /* XXX */

extern struct ph1handle *isakmp_ph1begin_i(struct remoteconf *,
    struct sockaddr *, struct sockaddr *);

extern vchar_t *isakmp_parsewoh(int, struct isakmp_gen *, int);
extern vchar_t *isakmp_parse(vchar_t *);

extern int isakmp_init(void);
extern const char *isakmp_pindex(const isakmp_index *, const uint32_t);
extern int isakmp_open(struct sockaddr *, int);
extern void isakmp_close(int fd);
extern int isakmp_send(struct ph1handle *, vchar_t *);

extern int isakmp_ph1send(struct ph1handle *);
extern int isakmp_ph2send(struct ph2handle *);
extern void isakmp_ph1dying_stub(struct sched *);
extern void isakmp_ph1dying(struct ph1handle *);
extern void isakmp_ph1expire_stub(struct sched *);
extern void isakmp_ph1expire(struct ph1handle *);
extern void isakmp_ph1delete_stub(struct sched *);
extern void isakmp_ph1delete(struct ph1handle *);
extern void isakmp_ph2expire_stub(struct sched *);
extern void isakmp_ph2expire(struct ph2handle *);
extern void isakmp_ph2delete_stub(struct sched *);
extern void isakmp_ph2delete(struct ph2handle *);

extern int isakmp_get_sainfo(struct ph2handle *, struct secpolicy *, struct secpolicy *);
extern int isakmp_post_acquire(struct ph2handle *, struct ph1handle *, int);
extern int isakmp_post_getspi(struct ph2handle *);
extern void isakmp_chkph1there_stub(struct sched *);
extern void isakmp_chkph1there(struct ph2handle *);

extern caddr_t isakmp_set_attr_v(caddr_t, int, caddr_t, int);
extern caddr_t isakmp_set_attr_l(caddr_t, int, uint32_t);
extern vchar_t *isakmp_add_attr_v(vchar_t *, int, caddr_t, int);
extern vchar_t *isakmp_add_attr_l(vchar_t *, int, uint32_t);

extern int isakmp_newcookie(caddr_t, struct sockaddr *, struct sockaddr *);

extern int isakmp_p2ph(vchar_t **, struct isakmp_gen *);

extern uint32_t isakmp_newmsgid2(struct ph1handle *);
extern caddr_t set_isakmp_header1(vchar_t *, struct ph1handle *, int);
extern caddr_t set_isakmp_header2(vchar_t *, struct ph2handle *, int);
extern caddr_t set_isakmp_payload(caddr_t, vchar_t *, int);

extern struct payload_list *isakmp_plist_append_full(
    struct payload_list *, vchar_t *, uint8_t, uint8_t);

static inline struct payload_list *
isakmp_plist_append(struct payload_list *plist, vchar_t *payload, uint8_t payload_type)
{
        return isakmp_plist_append_full(plist, payload, payload_type, 0);
}


extern vchar_t *isakmp_plist_set_all(struct payload_list **plist,
        struct ph1handle *iph1);

#ifdef HAVE_PRINT_ISAKMP_C
extern void isakmp_printpacket(vchar_t *, struct sockaddr *,
        struct sockaddr *, int);
#endif

extern int copy_ph1addresses( struct ph1handle *,
        struct remoteconf *, struct sockaddr *, struct sockaddr *);
extern void log_ph1established(const struct ph1handle *);

extern void script_hook(struct ph1handle *, int);
extern int script_env_append(char ***, int *, const char *, char *);
extern int script_exec(char *, int, char * const *);

void purge_remote(struct ph1handle *);
void delete_spd(struct ph2handle *, u_int64_t);
#ifdef INET6
uint32_t setscopeid(struct sockaddr *, struct sockaddr *);
#endif

#endif /* _ISAKMP_VAR_H */