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/* $OpenBSD: ripe.h,v 1.14 2021/01/19 10:02:22 claudio Exp $ */
/*
* Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
* Copyright (c) 2004, 2005 Esben Norby <norby@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 _RIPE_H_
#define _RIPE_H_
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
/* neighbor events */
enum nbr_event {
NBR_EVT_RESPONSE_RCVD,
NBR_EVT_REQUEST_RCVD,
NBR_EVT_RESPONSE_SENT,
NBR_EVT_TIMEOUT,
NBR_EVT_KILL_NBR,
NBR_EVT_NOTHING
};
/* neighbor actions */
enum nbr_action {
NBR_ACT_STRT_TIMER,
NBR_ACT_RST_TIMER,
NBR_ACT_DEL,
NBR_ACT_NOTHING
};
struct nbr_failed {
struct event timeout_timer;
LIST_ENTRY(nbr_failed) entry;
struct in_addr addr;
u_int32_t auth_seq_num;
};
struct nbr {
LIST_ENTRY(nbr) entry, hash;
struct event timeout_timer;
struct in_addr addr;
struct in_addr id;
struct packet_head rq_list;
struct packet_head rp_list;
struct iface *iface;
u_int32_t peerid; /* unique ID in DB */
u_int32_t auth_seq_num;
u_int16_t port;
time_t uptime;
int state;
int flags;
};
struct ctl_conn;
/* packet.c */
int send_packet(struct iface *, void *, size_t, struct sockaddr_in *);
void recv_packet(int, short, void *);
int gen_rip_hdr(struct ibuf *, u_int8_t);
/* interface.c */
void if_init(struct ripd_conf *, struct iface *);
int if_fsm(struct iface *, enum iface_event);
int if_set_mcast(struct iface *);
int if_set_mcast_ttl(int, u_int8_t);
int if_set_mcast_loop(int);
int if_set_opt(int);
int if_set_tos(int, int);
void if_set_recvbuf(int);
struct iface *if_new(struct kif *);
void if_del(struct iface *);
const char *if_event_name(int);
const char *if_action_name(int);
int if_join_group(struct iface *, struct in_addr *);
int if_leave_group(struct iface *, struct in_addr *);
struct ctl_iface *if_to_ctl(struct iface *);
/* message.c */
void recv_request(struct iface *, struct nbr *, u_int8_t *, u_int16_t);
void recv_response(struct iface *, struct nbr *, u_int8_t *, u_int16_t);
void add_entry(struct packet_head *, struct rip_route *);
void clear_list(struct packet_head *);
int send_triggered_update(struct iface *, struct rip_route *);
int send_request(struct packet_head *, struct iface *, struct nbr *);
int send_response(struct packet_head *, struct iface *, struct nbr *);
int start_report_timer(void);
void report_timer(int, short, void *);
/* ripe.c */
pid_t ripe(struct ripd_conf *, int [2], int [2], int [2]);
int ripe_imsg_compose_parent(int, pid_t, void *, u_int16_t);
int ripe_imsg_compose_rde(int, u_int32_t, pid_t, void *,
u_int16_t);
void ripe_dispatch_main(int, short, void *);
void ripe_dispatch_rde(int, short, void *);
void ripe_iface_ctl(struct ctl_conn *, unsigned int);
void ripe_nbr_ctl(struct ctl_conn *);
void ripe_demote_iface(struct iface *, int);
/* auth.c */
int auth_validate(u_int8_t **, u_int16_t *, struct iface *, struct nbr *,
struct nbr_failed *, u_int32_t *);
int auth_gen(struct ibuf *, struct iface *);
int auth_add_trailer(struct ibuf *, struct iface *);
int md_list_add(struct auth_md_head *, u_int8_t, char *);
void md_list_copy(struct auth_md_head *, struct auth_md_head *);
void md_list_clr(struct auth_md_head *);
/* neighbor.c */
void nbr_init(u_int32_t);
struct nbr *nbr_new(u_int32_t, struct iface *);
void nbr_del(struct nbr *);
struct nbr *nbr_find_ip(struct iface *, u_int32_t);
struct nbr *nbr_find_peerid(u_int32_t);
struct nbr_failed *nbr_failed_find(struct iface *, u_int32_t);
void nbr_failed_delete(struct nbr_failed *);
int nbr_fsm(struct nbr *, enum nbr_event);
void nbr_timeout_timer(int, short, void *);
void nbr_act_del(struct nbr *);
const char *nbr_event_name(int);
const char *nbr_action_name(int);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
#endif /* _RIPE_H_ */
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