/* $NetBSD: defs.h,v 1.16 2020/09/07 18:37:21 christos Exp $ */
/*
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE". Use of the mrouted program represents acceptance of
* the terms and conditions listed in that file.
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <syslog.h>
#include <signal.h>
#include <string.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#ifdef SYSV
#include <sys/sockio.h>
#endif
#include <sys/time.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/igmp.h>
#include <netinet/ip_mroute.h>
#ifdef RSRR
#include <sys/un.h>
#endif /* RSRR */
typedef void (*cfunc_t)(void *);
typedef void (*ihfunc_t)(int, fd_set *);
#include "dvmrp.h"
#include "vif.h"
#include "route.h"
#include "prune.h"
#include "pathnames.h"
#ifdef RSRR
#include "rsrr.h"
#include "rsrr_var.h"
#endif /* RSRR */
/*
* Miscellaneous constants and macros.
*/
#define FALSE 0
#define TRUE 1
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
#define TIMER_INTERVAL ROUTE_MAX_REPORT_DELAY
#define VENDOR_CODE 1 /* Get a new vendor code if you make significant
* changes to mrouted. */
#define PROTOCOL_VERSION 3 /* increment when packet format/content changes */
#define MROUTED_VERSION 8 /* increment on local changes or bug fixes, */
/* reset to 0 whever PROTOCOL_VERSION increments */
#define MROUTED_LEVEL ((MROUTED_VERSION << 8) | PROTOCOL_VERSION | \
((NF_PRUNE | NF_GENID | NF_MTRACE) << 16) | \
(VENDOR_CODE << 24))
/* for IGMP 'group' field of DVMRP messages */
#define LEAF_FLAGS (( vifs_with_neighbors == 1 ) ? 0x010000 : 0)
/* more for IGMP 'group' field of DVMRP messages */
#define DEL_RTE_GROUP 0
#define DEL_ALL_ROUTES 1
/* for Deleting kernel table entries */
/* obnoxious gcc gives an extraneous warning about this constant... */
#define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */
#ifdef RSRR
#define BIT_ZERO(X) ((X) = 0)
#define BIT_SET(X,n) ((X) |= 1 << (n))
#define BIT_CLR(X,n) ((X) &= ~(1 << (n)))
#define BIT_TST(X,n) ((X) & 1 << (n))
#endif /* RSRR */
#ifdef SYSV
#define bcopy(a, b, c) memcpy(b, a, c)
#define bzero(s, n) memset((s), 0, (n))
#define setlinebuf(s) setvbuf(s, NULL, _IOLBF, 0)
#define signal(s,f) sigset(s,f)
#endif
/*
* External declarations for global variables and functions.
*/
#define RECV_BUF_SIZE 8192
extern char *recv_buf;
extern char *send_buf;
extern size_t send_buflen;
extern int igmp_socket;
#ifdef RSRR
extern int rsrr_socket;
#endif /* RSRR */
extern u_int32_t allhosts_group;
extern u_int32_t allrtrs_group;
extern u_int32_t dvmrp_group;
extern u_int32_t dvmrp_genid;
#define DEFAULT_DEBUG 2 /* default if "-d" given without value */
extern int debug;
extern u_char pruning;
extern int routes_changed;
extern int delay_change_reports;
extern unsigned nroutes;
extern struct uvif uvifs[MAXVIFS];
extern vifi_t numvifs;
extern int vifs_down;
extern int udp_socket;
extern int vifs_with_neighbors;
#if !(defined(BSD) && (BSD >= 199103))
extern int errno;
extern int sys_nerr;
extern char * sys_errlist[];
#endif
#ifdef OLD_KERNEL
#define MRT_INIT DVMRP_INIT
#define MRT_DONE DVMRP_DONE
#define MRT_ADD_VIF DVMRP_ADD_VIF
#define MRT_DEL_VIF DVMRP_DEL_VIF
#define MRT_ADD_MFC DVMRP_ADD_MFC
#define MRT_DEL_MFC DVMRP_DEL_MFC
#define IGMP_PIM 0x14
#endif
/* main.c */
extern void logit(int, int, const char *, ...)
__attribute__((__format__(__printf__, 3, 4)));
extern int register_input_handler(int fd, ihfunc_t func);
/* igmp.c */
extern void init_igmp(void);
extern void accept_igmp(int recvlen);
extern void send_igmp(u_int32_t src, u_int32_t dst, int type,
int code, u_int32_t group, int datalen);
/* callout.c */
extern void callout_init(void);
extern void age_callout_queue(void);
extern int timer_setTimer(int delay, cfunc_t action, char *data);
extern void timer_clearTimer(int timer_id);
/* route.c */
extern void init_routes(void);
extern void start_route_updates(void);
extern void update_route(u_int32_t origin, u_int32_t mask,
u_int metric, u_int32_t src, vifi_t vifi);
extern void age_routes(void);
extern void expire_all_routes(void);
extern void free_all_routes(void);
extern void accept_probe(u_int32_t src, u_int32_t dst,
char *p, int datalen, u_int32_t level);
extern void accept_report(u_int32_t src, u_int32_t dst,
char *p, int datalen, u_int32_t level);
extern struct rtentry * determine_route(u_int32_t src);
extern void report(int which_routes, vifi_t vifi, u_int32_t dst);
extern void report_to_all_neighbors(int which_routes);
extern int report_next_chunk(void);
extern void add_vif_to_routes(vifi_t vifi);
extern void delete_vif_from_routes(vifi_t vifi);
extern void delete_neighbor_from_routes(u_int32_t addr,
vifi_t vifi);
extern void dump_routes(FILE *fp);
extern void start_route_updates(void);
/* vif.c */
extern void init_vifs(void);
extern void check_vif_state(void);
extern vifi_t find_vif(u_int32_t src, u_int32_t dst);
extern void age_vifs(void);
extern void dump_vifs(FILE *fp);
extern void stop_all_vifs(void);
extern struct listaddr *neighbor_info(vifi_t vifi, u_int32_t addr);
extern void accept_group_report(u_int32_t src, u_int32_t dst,
u_int32_t group, int r_type);
extern void query_groups(void);
extern void probe_for_neighbors(void);
extern int update_neighbor(vifi_t vifi, u_int32_t addr,
int msgtype, char *p, int datalen,
u_int32_t level);
extern void accept_neighbor_request(u_int32_t src, u_int32_t dst);
extern void accept_neighbor_request2(u_int32_t src, u_int32_t dst);
extern void accept_neighbors(u_int32_t src, u_int32_t dst,
u_char *p, int datalen,
u_int32_t level);
extern void accept_neighbors2(u_int32_t src, u_int32_t dst,
u_char *p, int datalen,
u_int32_t level);
extern void accept_leave_message(u_int32_t src, u_int32_t dst,
u_int32_t group);
extern void accept_membership_query(u_int32_t src, u_int32_t dst,
u_int32_t group, int tmo);
/* config.c */
extern void config_vifs_from_kernel(void);
/* cfparse.y */
extern void config_vifs_from_file(void);
/* inet.c */
extern int inet_valid_host(u_int32_t naddr);
extern int inet_valid_mask(u_int32_t mask);
extern int inet_valid_subnet(u_int32_t nsubnet, u_int32_t nmask);
extern char * inet_fmt(u_int32_t addr);
extern char * inet_fmts(u_int32_t addr, u_int32_t mask);
extern u_int32_t inet_parse(char *s, int *);
extern int inet_cksum(const void *addr, u_int len);
/* prune.c */
extern unsigned kroutes;
extern void add_table_entry(u_int32_t origin, u_int32_t mcastgrp);
extern void del_table_entry(struct rtentry *r,
u_int32_t mcastgrp, u_int del_flag);
extern void update_table_entry(struct rtentry *r);
extern void init_ktable(void);
extern void accept_prune(u_int32_t src, u_int32_t dst, char *p,
int datalen);
extern void steal_sources(struct rtentry *rt);
extern void reset_neighbor_state(vifi_t vifi, u_int32_t addr);
extern int grplst_mem(vifi_t vifi, u_int32_t mcastgrp);
extern int scoped_addr(vifi_t vifi, u_int32_t addr);
extern void free_all_prunes(void);
extern void age_table_entry(void);
extern void dump_cache(FILE *fp2);
extern void update_lclgrp(vifi_t vifi, u_int32_t mcastgrp);
extern void delete_lclgrp(vifi_t vifi, u_int32_t mcastgrp);
extern void chkgrp_graft(vifi_t vifi, u_int32_t mcastgrp);
extern void accept_graft(u_int32_t src, u_int32_t dst, char *p,
int datalen);
extern void accept_g_ack(u_int32_t src, u_int32_t dst, char *p,
int datalen);
/* u_int is promoted u_char */
extern void accept_mtrace(u_int32_t src, u_int32_t dst,
u_int32_t group, char *data, u_int no,
int datalen);
extern int find_src_grp(u_int32_t, u_int32_t, u_int32_t);
/* kern.c */
extern void k_set_rcvbuf(int);
extern void k_hdr_include(int);
extern void k_set_ttl(int);
extern void k_set_loop(int);
extern void k_set_if(u_int32_t);
extern void k_join(u_int32_t, u_int32_t);
extern void k_leave(u_int32_t, u_int32_t);
extern void k_init_dvmrp(void);
extern void k_stop_dvmrp(void);
extern void k_add_vif(vifi_t, struct uvif *);
extern void k_del_vif(vifi_t);
extern void k_add_rg(u_int32_t, struct gtable *);
extern int k_del_rg(u_int32_t, struct gtable *);
extern int k_get_version(void);
#ifdef SNMP
/* prune.c */
extern struct rtentry * snmp_find_route();
extern struct gtable * find_grp();
extern struct stable * find_grp_src();
#endif
#ifdef RSRR
/* prune.c */
extern struct gtable *kernel_table;
extern struct gtable *gtp;
extern int find_src_grp(u_int32_t src, u_int32_t mask,
u_int32_t grp);
/* rsrr.c */
extern void rsrr_init(void);
extern void rsrr_read(int f, fd_set *rfd);
extern void rsrr_clean(void);
extern void rsrr_cache_send(struct gtable *gt, int notify);
extern void rsrr_cache_clean(struct gtable *gt);
#endif /* RSRR */
/* vif.c */
extern void accept_info_reply(u_int32_t, u_int32_t, u_char *, int);
extern void accept_info_request(u_int32_t, u_int32_t,
u_char *, int);
extern void init_installvifs(void);